diff --git a/README.md b/README.md
index 34d5c72..df8632b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Saleyo
 
-Saleyo is a lightwight Python AOP framework, easy to use and integrate.
+Saleyo is a lightwight scalable Python AOP framework, easy to use and integrate.
 
 ## Getting Start
 
@@ -12,6 +12,8 @@ pip install saleyo
 
 ### Declear a `Mixin` class
 
+If you don't like decorators, you can pass arguments to operations and call the `mixin` method manually.
+
 ```python
 from saleyo import Mixin
 
@@ -24,10 +26,11 @@ class MixinFoo:...
 
 ### Use `MixinOperation`
 
+Here is a simple demo.
+
 ```python
 from typing import Any
-from saleyo import Mixin
-from saleyo.operation import Accessor, OverWrite, Post, Pre, Intercept, InvokeEvent
+from saleyo import Mixin, Accessor, OverWrite, Post, Pre, Intercept, InvokeEvent
 
 
 class Foo:
@@ -51,7 +54,7 @@ class MixinFoo:
     @Intercept.configure(target_name="demo")
     @staticmethod
     def intercept_demo(_: InvokeEvent):
-        return InvokeEvent.from_call(lambda: print("hello world"))
+        return InvokeEvent(lambda: print("hello world"))
 
     # Will call before `demo` call
     @Pre.configure(target_name="demo")
@@ -79,14 +82,39 @@ foo.demo()
 >>> post hello world
 ```
 
+### Custom ToolChain
+
+'ToolChain' determines the ability to modify the class.
+
+```python
+from saleyo import Mixin, GCToolChain, Arguments, Pre
+
+
+@Mixin(target=str, toolchain=GCToolChain)
+class MixinStr:
+    @Pre.configure(target_name="format")
+    def pre_format(self, *args) -> Arguments[...]:
+        print(f"input args: {args}")
+        return Arguments(self, "saleyo")
+
+
+print("hello world {}".format("python"))
+
+>>> input args: ('python',)
+>>> hello world saleyo
+```
+
+
 ### Custom Operation
 
+The default operations can't satify you? Why not try define a operation yourself!
+
 ```python
 from typing import Any, Type
-from saleyo.base.template import MixinOperation
-from saleyo.base.toolchain import ToolChain
+from saleyo import MixinOperation, ToolChain
 
 class MyOperation(MixinOperation[Any]):
     def mixin(self, target: Type, toolchain: ToolChain = ...) -> None:
         ...
-```
\ No newline at end of file
+```
+
diff --git a/pyproject.toml b/pyproject.toml
index f69a05e..c740b79 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "saleyo"
-version = "0.1.2"
-description = "Saleyo is a lightwight Python AOP framework, easy to use and integrate."
+version = "0.1.3"
+description = "Saleyo is a lightwight scalable Python AOP framework, easy to use and integrate."
 authors = [{ name = "H2Sxxa", email = "h2sxxa0w0@gmail.com" }]
 dependencies = []
 requires-python = ">=3.8"
diff --git a/src/saleyo/__init__.py b/src/saleyo/__init__.py
index dc5fa80..d147d2d 100644
--- a/src/saleyo/__init__.py
+++ b/src/saleyo/__init__.py
@@ -1,16 +1,33 @@
 """
 Saleyo is a module to modify external python code in runtime.
 
-The implements are in `mixin`.
+The `operation` module defines some default `MixinOperation`.
 
-If you want to call the method manually, you can try the `function` module.
+The `base` module is used to extend your own `mixin` method.
 
-If you want to use some decorators, please use the `decorator` module.
+Don't know how to start? Please see the part of Basic Tutorial in README.
 
-The `base` module is used to extend your own `mixin` method.
+The two links below are available.
+
+https://github.com/H2Sxxa/saleyo/blob/main/README.md
+
+https://pypi.org/project/saleyo/
 """
 
 from . import operation as operation
 from . import base as base
 from . import mixin as mixin
 from .mixin import Mixin as Mixin
+from .operation import Accessor as Accessor
+from .operation import Processor as Processor
+from .operation import Intercept as Intercept
+from .operation import OverWrite as OverWrite
+from .operation import Pre as Pre
+from .operation import Post as Post
+from .base.toolchain import ToolChain as ToolChain
+from .base.toolchain import Arguments as Arguments
+from .base.toolchain import InvokeEvent as InvokeEvent
+from .base.toolchain import CPyToolChain as CPyToolChain
+from .base.toolchain import GCToolChain as GCToolChain
+
+__version__ = (0, 1, 3)
diff --git a/src/saleyo/base/template.py b/src/saleyo/base/template.py
index 11a745b..214ac06 100644
--- a/src/saleyo/base/template.py
+++ b/src/saleyo/base/template.py
@@ -1,5 +1,5 @@
 from abc import ABC
-from typing import Generic, Type
+from typing import Any, Generic, Type
 
 from .toolchain import ToolChain
 from .typing import T
@@ -21,7 +21,7 @@ def __init__(self, argument: T, level=1) -> None:
         self.argument = argument
         self.level = level
 
-    def mixin(self, target: Type, toolchain: ToolChain = ToolChain()) -> None:
+    def mixin(self, target: Type[Any], toolchain: ToolChain = ToolChain()) -> None:
         raise NotImplementedError(
             f"Not Ready to use this Operation to modify '{target}' via '{toolchain}'"
         )
diff --git a/src/saleyo/base/toolchain.py b/src/saleyo/base/toolchain.py
index d5fb1d2..5886e7b 100644
--- a/src/saleyo/base/toolchain.py
+++ b/src/saleyo/base/toolchain.py
@@ -1,9 +1,8 @@
-from dataclasses import dataclass
-import ctypes as _ctypes
+from ctypes import py_object as _py_object, POINTER as _POINTER, cast as _cast
 from types import FunctionType
-from typing import Any, Callable, Dict, Generic, Optional
+from dataclasses import dataclass
 from gc import get_referents as _get_referents
-
+from typing import Any, Callable, Dict, Generic, Optional
 
 from ..base.typing import P, RT, NameSpace
 
@@ -11,9 +10,9 @@
 @dataclass
 class ToolChain:
     """
-    The tool to do mixin.
+    The tool class to do mixin.
 
-    Default to use `getattr`/`setattr`/`hasattr`
+    Default to use `getattr`/`setattr`/`hasattr`.
     """
 
     tool_getattr: Callable[[Any, str], Any] = getattr
@@ -36,8 +35,8 @@ class ToolChain:
 
 
 def _cpy_get_dict(_object: Any) -> Dict[str, Any]:
-    return _ctypes.cast(
-        id(_object) + type(_object).__dictoffset__, _ctypes.POINTER(_ctypes.py_object)
+    return _cast(
+        id(_object) + type(_object).__dictoffset__, _POINTER(_py_object)
     ).contents.value
 
 
@@ -84,46 +83,39 @@ def define_function(
         )[function_name]
 
 
-class Arugument(Generic[P]):
+class Arguments(Generic[P]):
     """
     `Argument` is used to call function, the Generic `P` is the params of target function.
     """
 
     def __init__(self, *args: P.args, **kwargs: P.kwargs) -> None:
-        self.positional = args
-        self.keyword = kwargs
+        self.args = args
+        self.kwargs = kwargs
 
     def __str__(self) -> str:
-        return f"Arugument(positional: {self.positional}, keyword: {self.keyword} )"
+        return f"Arugument(positional: {self.args}, keyword: {self.kwargs} )"
 
 
-@dataclass
 class InvokeEvent(Generic[P, RT]):
     """
     A `InvokeEvent` includes the target function and the arguments to call this functions.
-
-    Recommend to use the static method `InvokeEvent.from_call` to get a `InvokeEvent`.
     """
 
     target: Callable[P, RT]
-    argument: Arugument[P]
+    argument: Arguments[P]
 
-    @staticmethod
-    def from_call(
+    def __init__(
+        self,
         target: Callable[P, RT],
         *args: P.args,
         **kwargs: P.kwargs,
-    ) -> "InvokeEvent[P, RT]":
-        return InvokeEvent(
-            target=target,
-            argument=Arugument(
-                *args,
-                **kwargs,
-            ),
-        )
+    ) -> None:
+        super().__init__()
+        self.target = target
+        self.argument = Arguments(*args, **kwargs)
 
     def invoke(self, target: Callable[P, RT]) -> RT:
-        return target(*self.argument.positional, **self.argument.keyword)
+        return target(*self.argument.args, **self.argument.kwargs)
 
     def invoke_target(self) -> RT:
-        return self.target(*self.argument.positional, **self.argument.keyword)
+        return self.target(*self.argument.args, **self.argument.kwargs)
diff --git a/src/saleyo/base/typing.py b/src/saleyo/base/typing.py
index 2f0e0c9..0d3adc6 100644
--- a/src/saleyo/base/typing.py
+++ b/src/saleyo/base/typing.py
@@ -1,7 +1,22 @@
 from typing import Any, Dict, List, ParamSpec, Type, TypeVar, Union
 
-Target = Union[Type, List[Type]]
+Target = Union[Type[Any], List[Type[Any]]]
+"""
+`Target` is the target of `@Mixin`, it's the alias of `Union[Type[Any], List[Type[Any]]]`
+"""
 NameSpace = Dict[str, Any]
+"""
+`NameSpace` is the alias of `Dict[str, Any]`
+"""
 RT = TypeVar("RT")
+"""
+`RT` means `Return Type`
+"""
 T = TypeVar("T")
+"""
+`T` means `Type`
+"""
 P = ParamSpec("P")
+"""
+`P` means `Params`
+"""
diff --git a/src/saleyo/mixin.py b/src/saleyo/mixin.py
index 1fe2a33..c4e7281 100644
--- a/src/saleyo/mixin.py
+++ b/src/saleyo/mixin.py
@@ -1,4 +1,4 @@
-from typing import List, Type
+from typing import List
 
 from .base.template import MixinOperation
 from .base.toolchain import ToolChain
@@ -14,7 +14,7 @@ class Mixin:
     Allow to have more than one target, but that's not recommended.
     """
 
-    target: List[Type]
+    target: Target
     toolchain: ToolChain
     reverse_level: bool
 
diff --git a/src/saleyo/operation/__init__.py b/src/saleyo/operation/__init__.py
index c675054..aa0f191 100644
--- a/src/saleyo/operation/__init__.py
+++ b/src/saleyo/operation/__init__.py
@@ -1,5 +1,6 @@
 from .accessor import Accessor as Accessor
 from .overwrite import OverWrite as OverWrite
 from .processor import Processor as Processor
-from .intercept import Intercept as Intercept, InvokeEvent as InvokeEvent
-from .hook import Pre as Pre, Post as Post
+from .intercept import Intercept as Intercept
+from .hook import Pre as Pre
+from .hook import Post as Post
diff --git a/src/saleyo/operation/accessor.py b/src/saleyo/operation/accessor.py
index d6f6014..dd27e15 100644
--- a/src/saleyo/operation/accessor.py
+++ b/src/saleyo/operation/accessor.py
@@ -1,4 +1,4 @@
-from typing import Generic, Optional, Type
+from typing import Any, Generic, Optional, Type
 
 from ..base.toolchain import ToolChain
 from ..base.typing import T
@@ -9,6 +9,8 @@ class Accessor(Generic[T], MixinOperation[str]):
     """
     Want to access and modify some private varibles or methods? Try use `Accessor`!
 
+    The Generic is the type of target varible.
+
     Notice: The value only available after invoking the `mixin` method.
 
     If you use `@Mixin` and have more than one target classes, the `value` will always be the varible of latest target.
@@ -16,6 +18,10 @@ class Accessor(Generic[T], MixinOperation[str]):
 
     _inner: Optional[T]
 
+    def __init__(self, argument: str, level=1) -> None:
+        super().__init__(argument, level)
+        self._inner = None
+
     @staticmethod
     def configure(level: int = 1):
         return lambda argument: Accessor(
@@ -23,7 +29,7 @@ def configure(level: int = 1):
             level=level,
         )
 
-    def mixin(self, target: Type, toolchain: ToolChain = ToolChain()) -> None:
+    def mixin(self, target: Type[Any], toolchain: ToolChain = ToolChain()) -> None:
         self._inner = toolchain.tool_getattr(
             target,
             f"_{target.__name__}{self.argument}",
diff --git a/src/saleyo/operation/hook.py b/src/saleyo/operation/hook.py
index 50f0164..7c823e8 100644
--- a/src/saleyo/operation/hook.py
+++ b/src/saleyo/operation/hook.py
@@ -1,13 +1,15 @@
-from typing import Callable, Optional, Type
+from typing import Any, Callable, Optional, Type, Union
 
-from ..base.typing import RT, T
-from ..base.toolchain import ToolChain
+from ..base.typing import P, RT, T
+from ..base.toolchain import ToolChain, Arguments
 from ..base.template import MixinOperation
 
 
-class Post(MixinOperation[Callable[[T], RT]]):
+class Post(MixinOperation[Callable[[T], Optional[RT]]]):
     """
     `Post` will call after the target method, and the callable should be decorated as `@staticmethod` and have one argument to receive the result of target method.
+
+    If the `post` function return value is not `None`, it will replace the original result.
     """
 
     target_name: Optional[str]
@@ -32,30 +34,34 @@ def configure(
             level=level,
         )
 
-    def mixin(self, target: Type, toolchain: ToolChain = ToolChain()) -> None:
+    def mixin(self, target: Type[Any], toolchain: ToolChain = ToolChain()) -> None:
         target_name = (
             self.target_name if self.target_name is not None else self.argument.__name__
         )
-        native_function = toolchain.tool_getattr(target, target_name)
+        native_function: Callable[..., T] = toolchain.tool_getattr(target, target_name)
 
-        def post(*args, **kwargs):
+        def post(*args, **kwargs) -> Union[T, RT]:
             result = native_function(*args, **kwargs)
-            self.argument(result)
+            post_result = self.argument(result)
+            if post_result is not None:
+                return post_result
             return result
 
         return toolchain.tool_setattr(target, target_name, post)
 
 
-class Pre(MixinOperation[Callable[..., RT]]):
+class Pre(MixinOperation[Callable[P, Optional[Arguments[P]]]]):
     """
     `Pre` will call before the target method, and the callable should be decorated as `@staticmethod` and have `*args,**kwargs` to receive the arguments of target method.
+
+    If the `pre` function return value is a `Aruguments`(not `None`), it will replace the original arguments.
     """
 
     target_name: Optional[str]
 
     def __init__(
         self,
-        argument: Callable[[T], RT],
+        argument: Callable[P, Optional[Arguments[P]]],
         target_name: Optional[str] = None,
         level: int = 1,
     ) -> None:
@@ -73,14 +79,16 @@ def configure(
             level=level,
         )
 
-    def mixin(self, target: Type, toolchain: ToolChain = ToolChain()) -> None:
+    def mixin(self, target: Type[Any], toolchain: ToolChain = ToolChain()) -> None:
         target_name = (
             self.target_name if self.target_name is not None else self.argument.__name__
         )
         native_function = toolchain.tool_getattr(target, target_name)
 
-        def pre(*args, **kwargs):
-            self.argument(*args, **kwargs)
+        def pre(*args: P.args, **kwargs: P.kwargs) -> Any:
+            arguments = self.argument(*args, **kwargs)
+            if arguments is not None:
+                return native_function(*arguments.args, **arguments.kwargs)
             return native_function(*args, **kwargs)
 
         return toolchain.tool_setattr(target, target_name, pre)
diff --git a/src/saleyo/operation/intercept.py b/src/saleyo/operation/intercept.py
index 77f3856..1274748 100644
--- a/src/saleyo/operation/intercept.py
+++ b/src/saleyo/operation/intercept.py
@@ -13,7 +13,9 @@ class Intercept(Generic[_PA, _PB], MixinOperation[Callable[[_A[_PA]], _B[_PB]]])
     """
     The `Intercept` allow you to intercept the arguments before invoking target method.
 
-    Then, you can handle these arguments in your own function.
+    Then, you can handle these arguments in your own function and make a redirect to another function.
+
+    If you just want to modify the arguments or the result, please see `Pre` and `Post`.
     """
 
     target_name: Optional[str]
@@ -40,7 +42,7 @@ def configure(
 
     def mixin(
         self,
-        target: Type,
+        target: Type[Any],
         toolchain: ToolChain = ToolChain(),
     ) -> None:
         target_name = (
@@ -56,6 +58,6 @@ def mixin(
             target,
             target_name,
             lambda *args, **kwargs: self.argument(
-                InvokeEvent.from_call(native_function, *args, **kwargs)
+                InvokeEvent(native_function, *args, **kwargs)
             ).invoke_target(),
         )
diff --git a/src/saleyo/operation/overwrite.py b/src/saleyo/operation/overwrite.py
index ad28280..9b54eb9 100644
--- a/src/saleyo/operation/overwrite.py
+++ b/src/saleyo/operation/overwrite.py
@@ -1,4 +1,4 @@
-from typing import Callable, Optional, Type
+from typing import Any, Callable, Optional, Type
 
 from ..base.toolchain import ToolChain
 from ..base.template import MixinOperation
@@ -32,11 +32,11 @@ def configure(
             target_name=target_name,
         )
 
-    def mixin(self, target: Type, toolchain: ToolChain = ToolChain()) -> None:
+    def mixin(self, target: Type[Any], toolchain: ToolChain = ToolChain()) -> None:
         target_name = (
             self.argument.__name__ if self.target_name is None else self.target_name
         )
-        # self.argument.__qualname__ = f"{target.__name__}.{target_name}"
+        self.argument.__qualname__ = f"{target.__name__}.{target_name}"
         return toolchain.tool_setattr(
             target,
             target_name,
diff --git a/src/saleyo/operation/processor.py b/src/saleyo/operation/processor.py
index c78223f..aa00283 100644
--- a/src/saleyo/operation/processor.py
+++ b/src/saleyo/operation/processor.py
@@ -1,6 +1,6 @@
 from inspect import getsource
 from types import ModuleType
-from typing import Callable, Optional, Type
+from typing import Any, Callable, Optional, Type
 
 from ..base.typing import NameSpace
 from ..base.toolchain import Container, ToolChain
@@ -12,6 +12,8 @@ class Processor(MixinOperation[Callable[[str], str]]):
     If you want to get the soure code of a method and use `split` and `replace` to modify and redefine it,Try `Processor`.
 
     When you try to use this, please make sure you configure the correct module of your target, or you can use `extra_namespace` to supplement the missing things.
+
+    Don't try to use it with external code, like the code of cpython, it will crash.
     """
 
     module: Optional[ModuleType]
@@ -53,7 +55,7 @@ def configure(
 
     def mixin(
         self,
-        target: Type,
+        target: Type[Any],
         toolchain: ToolChain = ToolChain(),
     ) -> None:
         target_name = (
diff --git a/tests/__init__.py b/tests/__init__.py
index 4121273..b46b88e 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1,2 +1,4 @@
 import intercept as intercept
 import demo as demo
+import gc_test as gc_test
+import custom as custom
diff --git a/tests/demo.py b/tests/demo.py
index 2d61d1a..e403ef0 100644
--- a/tests/demo.py
+++ b/tests/demo.py
@@ -1,6 +1,5 @@
 from typing import Any
-from saleyo import Mixin
-from saleyo.operation import Accessor, OverWrite, Post, Pre, Intercept, InvokeEvent
+from saleyo import Mixin, Accessor, OverWrite, Post, Pre, Intercept, InvokeEvent
 
 
 class Foo:
@@ -24,7 +23,7 @@ def func(self):
     @Intercept.configure(target_name="demo")
     @staticmethod
     def intercept_demo(_: InvokeEvent):
-        return InvokeEvent.from_call(lambda: print("hello world"))
+        return InvokeEvent(lambda: print("hello world"))
 
     # Will call before `demo` call
     @Pre.configure(target_name="demo")
diff --git a/tests/gc.py b/tests/gc.py
deleted file mode 100644
index 332ab18..0000000
--- a/tests/gc.py
+++ /dev/null
@@ -1,17 +0,0 @@
-from saleyo.base.toolchain import GCToolChain, InvokeEvent
-from saleyo.mixin import Mixin
-from saleyo.operation.intercept import Intercept
-
-
-@Mixin(target=str, toolchain=GCToolChain)
-class MixinStr:
-    @Intercept.configure(
-        target_name="format",
-    )
-    @staticmethod
-    def test(_: InvokeEvent):
-        print(_.argument)
-        return _
-
-
-print("HELLO world".format())
diff --git a/tests/gc_test.py b/tests/gc_test.py
new file mode 100644
index 0000000..d8e6529
--- /dev/null
+++ b/tests/gc_test.py
@@ -0,0 +1,12 @@
+from saleyo import Mixin, GCToolChain, Arguments, Pre
+
+
+@Mixin(target=str, toolchain=GCToolChain)
+class MixinStr:
+    @Pre.configure(target_name="format")
+    def pre_format(self, *args) -> Arguments[...]:
+        print(f"input args: {args}")
+        return Arguments(self, "python")
+
+
+print("hello world {}".format("saleyo"))
diff --git a/tests/intercept.py b/tests/intercept.py
index 26aa326..c0ac514 100644
--- a/tests/intercept.py
+++ b/tests/intercept.py
@@ -12,7 +12,7 @@ class MixinFoo:
     @Intercept.configure(target_name="demo")
     @staticmethod
     def intercept_demo(_: InvokeEvent):
-        return InvokeEvent.from_call(lambda: print("hello world"))
+        return InvokeEvent(lambda: print("hello world"))
 
     @Pre.configure(target_name="demo")
     def pre_demo(*arg):