diff --git a/bg/dynamic_bg/dynamic_bg_pattern/dynamic_bg_pattern.gd b/bg/dynamic_bg/dynamic_bg_pattern/dynamic_bg_pattern.gd
index 6e37fa4..82526fc 100644
--- a/bg/dynamic_bg/dynamic_bg_pattern/dynamic_bg_pattern.gd
+++ b/bg/dynamic_bg/dynamic_bg_pattern/dynamic_bg_pattern.gd
@@ -18,5 +18,10 @@ func _process(delta):
 		queue_free()
 
 func _on_victory_change(v: bool):
-	$Word1.set_victory(v)
-	$Word2.set_victory(v)
+	if v:
+		$Word1.set_color_from_name("golden")
+		$Word2.set_color_from_name("golden")
+	else:
+		$Word1.set_color_from_name("default")
+		$Word2.set_color_from_name("default")
+
diff --git a/levels/base_level/base_level.gd b/levels/base_level/base_level.gd
index 65e9966..8c14381 100644
--- a/levels/base_level/base_level.gd
+++ b/levels/base_level/base_level.gd
@@ -21,14 +21,15 @@ const I_NUMBER = ["I","II","III","VI","V"]
 
 const DATA := [
 	[
-		["=P", "P {} {}", "= P"],
-		["P", "P [] {}", "= P P"],
-		["=D", "D {} {}", "= D P"],
-		["Reverse", "{} {} []", "d d = P P D D"]
+		["=P", "P [] []", "= P"],
+		["Make a Smile", "P {} {}", "= P P"],
+		["=D", "[] {} {}", "P = D D"],
+		["Reversed", "{} [] []", "D D = d d"],
+		["Watch Out the Direction", "[] {} {}", "d d = R R b b"],
 	],
 	[
-		["False", "[] [] 0 {} {}", "= + P P"],
-		["True", "[] {} {} [] 1", "= + P 1"],
+		["0+0=0, 1+0=1", "[] [] {} {} d", "= + 0 d"],
+		["1+1=1", "[] [] {} {} 1", "= + d 1"],
 		["Swap", "Q + [] = {} + []", "P P P P Q Q Q Q"],
 		["Always True", "1 [] {} = {} [] []", "1++PPdd"],
 		["Make Me Laugh", "1 {} {} = []", "XDD"],
@@ -123,7 +124,7 @@ func init(_chap_id: int, _lvl_id: int) -> void:
 		$Blocks.add_child(new_block)
 	
 	expr = question
-	print(expr)
+	# print(expr)
 	
 	
 	pos = WIDTH / 2 - CARDS_SEP * len(choices) / 2 + 16
@@ -151,7 +152,7 @@ func _process(_delta):
 func stage_clear() -> void:
 	$SFXs/LevelClear.play()
 	for card_base: CardBase in $CardBases.get_children():
-		card_base.call("set_victory")
+		card_base.set_victory()
 		
 	$HUDs/TableCloth/GoldenCloth.set_visible(true)
 	$HUDs/NextLevelButton.start_fade()
@@ -161,17 +162,17 @@ func _on_card_put() -> void:
 	var block_array = []
 	for block : Block in $Blocks.get_children():
 		if not block.occupied:
-			print(block.quest_pos, " is not occupied")
+			# print(block.quest_pos, " is not occupied")
 			return
 		expr[block.quest_pos] = block.occupied_word
 		block_array.append(block)
 		
-	prints("# expr: ", expr)
+	# prints("# expr: ", expr)
 	
 	if expr.count("_") == 0:
 		var info = $Calculator.check(expr, req_pos)
-		prints("expr:", expr)
-		prints("info:", info)
+		# prints("expr:", expr)
+		# prints("info:", info)
 		
 		if info[0] != "OK":
 			$SFXs/WrongAnswer.play()
@@ -179,25 +180,26 @@ func _on_card_put() -> void:
 		if info[0] == "INVALID":
 			for block: Block in $Blocks.get_children():
 				if block.quest_pos in info[1]:
-					block.call("shake")
+					block.shake(false)
 		elif info[0] == "SMILE_UNSATISFIED":
 			for block: Block in $Blocks.get_children():
-				if block.quest_pos == info[1]:
-					block.call("shake")
+				if block.quest_pos in info[1]:
+					block.shake(true)
 		elif info[0] == "NOT_ALWAYS_TRUE":
 			for block: Block in $Blocks.get_children():
-				block.call("shake")
+				block.shake(false)
 		else:
 			# victory
 			get_tree().current_scene.set_victory(true)
 			stage_clear()
-			print(block_array)
+			# print(block_array)
 			for i in range(len(block_array)):
 				if i != 0:
 					if $Calculator.is_smile(expr[i-1]+expr[i]):
 						print(expr[i-1]+expr[i])
-						block_array[i-1].set_victory(true)
-						block_array[i].set_victory(true)
+						# print(expr[i-1]+expr[i])
+						block_array[i-1].set_color_from_name("golden")
+						block_array[i].set_color_from_name("golden")
 
 func _input(event: InputEvent):
 	if event is InputEventKey:
diff --git a/levels/chapter_menu/level_menu/level_button/level_button.tscn b/levels/chapter_menu/level_menu/level_button/level_button.tscn
index 57ad4cf..ccd244e 100644
--- a/levels/chapter_menu/level_menu/level_button/level_button.tscn
+++ b/levels/chapter_menu/level_menu/level_button/level_button.tscn
@@ -12,3 +12,4 @@ script = ExtResource("1_wwqfn")
 [node name="Word" parent="." index="0" instance=ExtResource("3_js2i2")]
 position = Vector2(19, 19)
 scale = Vector2(1.5, 1.5)
+text_id = 0
diff --git a/objects/block/block.gd b/objects/block/block.gd
index 997abc0..8fdd1f1 100644
--- a/objects/block/block.gd
+++ b/objects/block/block.gd
@@ -3,32 +3,31 @@ extends Area2D
 class_name Block
 
 
-const SHAKE_AMOUNT := 4
+const SHAKE_AMOUNT := 3.0 ## 振动时的振幅（单位为像素）。
 
 
-var occupied := false
-var occupied_word: String
-var occupied_card: Card
+var occupied := false ## 当 Block 上有 Card 或 Block 字符固定时，occupied 为 true。
+var occupied_word := "_" ## Block 上的字符，若没有字符则为 _ 。
+var occupied_card: Card = null
+
+var quest_pos := -1 ## 在表达式中对应字符位置的下标。
+var is_shaking := false ## 是否正在振动。
 
-var quest_pos := -1
-var is_shaking := false
 
 
 func _on_area_entered(area: Card):
-	#prints("Entered", self, name)
 	if not occupied:
 		area.on_card_entered(self)
 
 func _on_area_exited(area: Card):
-	#prints("Exited", self, name)
 	if not occupied:
 		area.on_card_exited()
 
-func set_word(e: String) -> void:
-	$Word.set_word(e)
-	if e != "_" and e != ".":
+func set_word(value: String) -> void:
+	$Word.set_word(value)
+	if value != "_" and value != ".":
 		occupied = true
-		occupied_word = e
+		occupied_word = value
 	else:
 		occupied = false
 		occupied_word = "_"
@@ -63,15 +62,33 @@ func _process(_delta):
 	$Word.position.x = offset 
 
 
-func shake():
+## 开始震动。
+## is_frame_red 表示是否将框改为红色。
+func shake(is_frame_red: bool) -> void: 
+	# 开启震动
 	$ShakeTimer.start()
 	is_shaking = true
-
-func _on_shake_timer_timeout():
+	
+	# 使附着的卡牌也震动
+	if occupied_card != null:
+		occupied_card.shake(not is_frame_red, SHAKE_AMOUNT, $ShakeTimer.wait_time) # 若框不红，则里面的字要红
+	elif not is_frame_red:
+		$Word.set_color_from_name("red")
+	
+	if is_frame_red:
+		$GoalFrameSprite.animation = "red"
+	
+func _on_shake_timer_timeout() -> void:
 	is_shaking = false
+	$GoalFrameSprite.animation = "default"
+	$Word.set_color_from_name("default")
 	
-func set_victory(v: bool):
-	if occupied and occupied_card:
+func set_victory(v: bool) -> void:
+	if v and occupied_card != null:
 		occupied_card.set_victory(v)
+
+func set_color_from_name(name: String) -> void:
+	if occupied_card != null:
+		occupied_card.set_color_from_name(name)
 	else:
-		$Word.set_victory(v)
+		$Word.set_color_from_name("golden")	
diff --git a/objects/block/block.tscn b/objects/block/block.tscn
index 75f677a..89f6f66 100644
--- a/objects/block/block.tscn
+++ b/objects/block/block.tscn
@@ -1,13 +1,33 @@
-[gd_scene load_steps=6 format=3 uid="uid://ckjmjwywh78fe"]
+[gd_scene load_steps=8 format=3 uid="uid://ckjmjwywh78fe"]
 
 [ext_resource type="Script" path="res://objects/block/block.gd" id="1_11h57"]
 [ext_resource type="PackedScene" uid="uid://cvx7wowcbfo0r" path="res://objects/word/word.tscn" id="2_pjs40"]
 [ext_resource type="Texture2D" uid="uid://dvj7bjepxeks0" path="res://objects/block/pit.png" id="3_ye3hk"]
-[ext_resource type="Texture2D" uid="uid://cb71r50jw2a3i" path="res://objects/block/goal_frame2.png" id="4_v6rgm"]
+[ext_resource type="Texture2D" uid="uid://cb71r50jw2a3i" path="res://objects/block/goal_frame.png" id="4_yvtjk"]
+[ext_resource type="Texture2D" uid="uid://cvv532ui6p5gg" path="res://objects/block/goal_frame_red.png" id="5_et5vw"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_3if4e"]
 size = Vector2(16, 16)
 
+[sub_resource type="SpriteFrames" id="SpriteFrames_3dme2"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": ExtResource("4_yvtjk")
+}],
+"loop": true,
+"name": &"default",
+"speed": 5.0
+}, {
+"frames": [{
+"duration": 1.0,
+"texture": ExtResource("5_et5vw")
+}],
+"loop": true,
+"name": &"red",
+"speed": 5.0
+}]
+
 [node name="Block" type="Area2D"]
 script = ExtResource("1_11h57")
 
@@ -22,11 +42,11 @@ debug_color = Color(0.968627, 0, 0.470588, 0.419608)
 z_index = -1
 texture = ExtResource("3_ye3hk")
 
-[node name="GoalFrameSprite" type="Sprite2D" parent="."]
-texture = ExtResource("4_v6rgm")
-
 [node name="ShakeTimer" type="Timer" parent="."]
-wait_time = 0.1
+wait_time = 0.2
+
+[node name="GoalFrameSprite" type="AnimatedSprite2D" parent="."]
+sprite_frames = SubResource("SpriteFrames_3dme2")
 
 [connection signal="area_entered" from="." to="." method="_on_area_entered"]
 [connection signal="area_exited" from="." to="." method="_on_area_exited"]
diff --git a/objects/card/card.gd b/objects/card/card.gd
index b3676ec..f9e8b64 100644
--- a/objects/card/card.gd
+++ b/objects/card/card.gd
@@ -16,7 +16,11 @@ var last_occupied_area: Block
 var is_card_base_entered = 0
 var entered_card_base_global_position: Vector2
 
-var is_victory = false
+var is_victory := false
+
+var shake_amount : float
+var is_shaking := false
+
 
 func _ready():
 	origin_global_position = global_position
@@ -81,13 +85,19 @@ func _input_event(viewport: Object, event: InputEvent, shape_idx: int) -> void:
 			reset_position()
 
 func _process(delta: float) -> void:
-	#prints(name, global_position)
 	if not have_deal_on_mouse_release and not Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT):
 		_on_mouse_release()
 	if is_dragging:
 		have_deal_on_mouse_release = false
 		global_position = get_global_mouse_position().round()
 		Input.set_default_cursor_shape(Input.CURSOR_DRAG)
+		
+	var offset := 0
+	if is_shaking:
+		var progress = $ShakeTimer.time_left / $ShakeTimer.wait_time * 2 * PI
+		offset = int(sin(progress) * shake_amount)
+	$CardBackSprite.position.x = offset
+	$Word.position.x = offset 
 
 func on_card_entered(area: Block) -> void:
 	is_card_entered += 1
@@ -113,6 +123,20 @@ func get_word() -> String:
 	return $Word.get_word()
 
 
+func shake(is_letter_red: bool, amount: float, duration: float) -> void:
+	$ShakeTimer.wait_time = duration
+	shake_amount = amount
+
+	# 开启震动
+	$ShakeTimer.start()
+	is_shaking = true
+	
+	
+	if is_letter_red:
+		$Word.set_color_from_name("red")
+	else:
+		$CardBackSprite.animation = "default"
+
 
 
 func _on_mouse_entered():
@@ -123,5 +147,18 @@ func _on_mouse_exited():
 	$CardBackSprite.animation = "default"
 	Input.set_default_cursor_shape(Input.CURSOR_ARROW)
 
+func set_color_from_name(name: String) -> void:
+	$Word.set_color_from_name(name)
+
+func set_color(value: Color) -> void:
+	$Word.set_color(value)
+
+
 func set_victory(v: bool):
-	$Word.set_victory(v)
+	if v:
+		$CollisionShape2D.set_deferred("disabled", true)
+
+
+func _on_shake_timer_timeout():
+	is_shaking = false
+	$Word.set_color_from_name("default")
diff --git a/objects/card/card.tscn b/objects/card/card.tscn
index 0c0571d..912f83d 100644
--- a/objects/card/card.tscn
+++ b/objects/card/card.tscn
@@ -55,5 +55,10 @@ autoplay = "default"
 stream = ExtResource("7_u4ylf")
 volume_db = 13.117
 
+[node name="ShakeTimer" type="Timer" parent="."]
+wait_time = 100.0
+one_shot = true
+
 [connection signal="mouse_entered" from="." to="." method="_on_mouse_entered"]
 [connection signal="mouse_exited" from="." to="." method="_on_mouse_exited"]
+[connection signal="timeout" from="ShakeTimer" to="." method="_on_shake_timer_timeout"]
diff --git a/objects/card_base/card_base.gd b/objects/card_base/card_base.gd
index 036de2e..c6ca2c7 100644
--- a/objects/card_base/card_base.gd
+++ b/objects/card_base/card_base.gd
@@ -73,6 +73,9 @@ func _input_event(viewport: Object, event: InputEvent, shape_idx: int) -> void:
 
 func set_word(e: String) -> void:
 	$Word.set_word(e)
+	
+func get_word() -> String:
+	return $Word.get_word()
 
 func _on_card_put():
 	emit_signal("card_put")
@@ -85,7 +88,7 @@ func set_victory() -> void:
 	$Label.set_visible(false)
 	
 	for card: Card in $Cards.get_children():
-		card.is_victory = true
+		card.set_victory(true)
 
 func reset_all_card_position():
 	for card: Card in $Cards.get_children():
diff --git a/objects/word/word.gd b/objects/word/word.gd
index 77fba69..c66e7b5 100644
--- a/objects/word/word.gd
+++ b/objects/word/word.gd
@@ -2,7 +2,7 @@ extends AnimatedSprite2D
 
 
 @export var text_id := 1
-@export var is_victory = false
+@export var color := Color.BLACK
 
 
 const STEP := 30
@@ -18,22 +18,23 @@ const LETTER_NAME = ["_", "=", "P", "b", "D",
 func get_letter_id(letter: String) -> int:
 	for i in range(len(LETTER_NAME)):
 		if LETTER_NAME[i] == letter:
-			return i + 1
+			return i
 	assert(false, "Letter " + letter + " not found")
 	return -1
 	
 
 ## 内建，不要用。
 func set_text_id(value: int) -> void:
+	assert(value >= 0, "text id < 0")
 	text_id = value
-	
-	assert(value > 0, "text id <= 0")
-	
-	var animation_id = str(text_id) + str(is_victory)
+	update_animation()
+
+func update_animation() -> void:
+	var animation_id = str(text_id) + color.to_html()
 	if not sprite_frames.has_animation(animation_id):
 		sprite_frames.add_animation(animation_id)
 		for i in range(3):
-			sprite_frames.add_frame(animation_id, load_image(i * STEP + text_id, is_victory))
+			sprite_frames.add_frame(animation_id, load_image(i * STEP + text_id + 1, color))
 	animation = animation_id
 	
 	
@@ -41,37 +42,56 @@ func set_text_id(value: int) -> void:
 ## 更改字母为 text。
 func set_word(text: String) -> void:
 	if text == "_" or text == ".":
-		set_text_id(1)
+		set_text_id(0)
 	else:
 		set_text_id(get_letter_id(text))
 
 ## 获得当前字母。
 func get_word() -> String:
-	return LETTER_NAME[text_id - 1]
+	return LETTER_NAME[text_id]
 
 
 func _ready():
-	set_text_id(text_id)
+	update_animation()
+	
 
 
 func _process(delta):
-	if animation == "default":
-		set_text_id(text_id)
+	update_animation()
 		
-func set_victory(v: bool):
-	if v != is_victory:
-		is_victory = v
-		set_text_id(text_id)
+func set_color_from_name(name: String) -> void:
+	if name == "red":
+		set_color(Color("#DD4132"))
+	elif name == "golden":
+		set_color(Color("#F5DF4D"))
+	elif name == "default":
+		set_color(Color.BLACK)
+	else:
+		assert(false, "color %s not in list" % name)
+
+func set_color(value: Color) -> void:
+	color = value
+	update_animation()
+
+## 设置是否为关卡通过状态。
+## 已弃用，请使用 set_color 或 set_color_from_name 代替。
+## @deprecated
+func set_victory(v: bool) -> void:
+	push_warning("void set_victory(v: bool) is deprecated.")
+	if v:
+		set_color_from_name("golden")
+	else:
+		set_color_from_name("default")
 		
-func load_image(h: int, is_victory: bool):
+func load_image(h: int, new_color: Color):
 	var image := load("res://objects/word/sprites/sprite" + str(h) + ".png")
-	if is_victory:
+	if new_color != Color.BLACK:
 		var new_texture = image.get_image()
 		for x in range(new_texture.get_width()):
 			for y in range(new_texture.get_height()):
 				var color = new_texture.get_pixel(x, y)
-				if color == Color(0, 0, 0, 1):  # 如果像素是黑色
-					new_texture.set_pixel(x, y, Color.hex(0xf5df4dff))  # 将其改为金黄色
+				if color == Color.BLACK:  # 如果像素是黑色
+					new_texture.set_pixel(x, y, new_color)  # 将其改为金黄色
 		return ImageTexture.create_from_image(new_texture)
 		
 	return image