diff --git a/pypots/gungnir/client.py b/pypots/gungnir/client.py
index a81f8e60..8bfd2cd5 100644
--- a/pypots/gungnir/client.py
+++ b/pypots/gungnir/client.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 """
 
 """
@@ -5,10 +7,24 @@
 # Created by Wenjie Du <wenjay.du@gmail.com>
 # License: BSD-3-Clause
 
-from ai4ts.client import TimeSeriesAI
-
 from ..utils.logging import logger
 
+logger.info(
+    """\u001b[34m
+████████╗██╗███╗   ███╗███████╗    ███████╗███████╗██████╗ ██╗███████╗███████╗    █████╗ ██╗
+╚══██╔══╝██║████╗ ████║██╔════╝    ██╔════╝██╔════╝██╔══██╗██║██╔════╝██╔════╝   ██╔══██╗██║
+   ██║   ██║██╔████╔██║█████╗█████╗███████╗█████╗  ██████╔╝██║█████╗  ███████╗   ███████║██║
+   ██║   ██║██║╚██╔╝██║██╔══╝╚════╝╚════██║██╔══╝  ██╔══██╗██║██╔══╝  ╚════██║   ██╔══██║██║
+   ██║   ██║██║ ╚═╝ ██║███████╗    ███████║███████╗██║  ██║██║███████╗███████║██╗██║  ██║██║
+   ╚═╝   ╚═╝╚═╝     ╚═╝╚══════╝    ╚══════╝╚══════╝╚═╝  ╚═╝╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═╝╚═╝
+
+v{0.1} - building AI for unified time-series analysis, https://time-series.ai
+\u001b[0m
+"""
+)
+
+from ai4ts.client import TimeSeriesAI
+
 
 class Gungnir(TimeSeriesAI):
     def __init__(self):
diff --git a/pypots/utils/logging.py b/pypots/utils/logging.py
index 13c0c198..ac321619 100644
--- a/pypots/utils/logging.py
+++ b/pypots/utils/logging.py
@@ -5,8 +5,111 @@
 # Created by Wenjie Du <wenjay.du@gmail.com>
 # License: BSD-3-Clause
 
-from tsdb.utils.logging import Logger
+import logging
+import os
+import sys
 
-# initialize a logger for PyPOTS logging
-logger_creator = Logger(name="PyPOTS running log")
+print(f"default encoding: {sys.getdefaultencoding()}")
+if os.getenv("PYTHONIOENCODING") != "UTF-8":
+    cmd = [sys.executable, *sys.argv]
+    os.execvpe(cmd[0], cmd, {**os.environ, "PYTHONIOENCODING": "UTF-8"})
+logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
+
+LEVELS = {
+    "debug": logging.DEBUG,
+    "info": logging.INFO,
+    "warning": logging.WARNING,
+    "error": logging.ERROR,
+}
+
+
+class Logger:
+    """Logging class for TSDB logger initialization and control."""
+
+    def __init__(
+        self,
+        name: str = "TSDB running log",
+        logging_level: str = "debug",
+        logging_format: str = "%(asctime)s [%(levelname)s]: %(message)s",
+    ):
+        """
+        Parameters
+        ----------
+        name :
+            The name for the logger to be initialized.
+
+        logging_level :
+            The logging level of the logger, should be debug/info/warning/error.
+
+        logging_format :
+            Logging format of the logger.
+
+        """
+
+        assert logging_level in LEVELS.keys(), f"logging_level should be {list(LEVELS.keys())}, but got {logging_level}"
+
+        self.logger = logging.getLogger(name)
+        self.logging_level = LEVELS[logging_level]
+
+        self.stream_handler = logging.StreamHandler()
+        self.formatter = None
+        self.file_handler = None
+
+        self.set_level(logging_level)
+        self.set_logging_format(logging_format)
+        self.logger.propagate = False
+
+    def set_logging_format(self, logging_format: str) -> None:
+        self.formatter = logging.Formatter(logging_format, datefmt="%Y-%m-%d %H:%M:%S")
+        self.stream_handler.setFormatter(self.formatter)
+        self.stream_handler.encoding = "utf-8"
+        self.logger.addHandler(self.stream_handler)
+        if self.file_handler is not None:
+            self.file_handler.setFormatter(self.formatter)
+            self.logger.addHandler(self.file_handler)
+
+    def set_saving_path(self, saving_dir: str, name: str, mode: str = "a") -> None:
+        """Set the logger's saving path. This function will enable saving logs to the specified path.
+
+        Parameters
+        ----------
+        saving_dir :
+            The path to the directory for logging file saving.
+
+        name :
+            The name of the logging file to be saved.
+
+        mode :
+            Logging file writing mode.
+
+        """
+        if not os.path.exists(saving_dir):
+            self.logger.warning(f"{saving_dir} does not exist. Creating it now...")
+            os.makedirs(saving_dir)
+        path = os.path.join(saving_dir, name)
+        self.file_handler = logging.FileHandler(path, mode=mode, encoding="utf-8")
+        self.file_handler.setLevel(self.logging_level)
+        self.file_handler.setFormatter(self.formatter)
+        self.logger.addHandler(self.file_handler)
+        self.logger.info(f"Log will be saved to {path}")
+
+    def set_level(self, level: str) -> None:
+        """Set the logger's logging level.
+
+        Parameters
+        ----------
+        level :
+            The logging level of the logger, should be debug/info/warning/error.
+
+        """
+        self.logging_level = LEVELS[level]
+        self.logger.setLevel(self.logging_level)
+        if self.stream_handler is not None:
+            self.stream_handler.setLevel(self.logging_level)
+        if self.file_handler is not None:
+            self.file_handler.setLevel(self.logging_level)
+
+
+# initialize a logger for TSDB logging
+logger_creator = Logger()
 logger = logger_creator.logger