diff --git a/levels/base_level/base_level.gd b/levels/base_level/base_level.gd
index 27003e8..768c0b3 100644
--- a/levels/base_level/base_level.gd
+++ b/levels/base_level/base_level.gd
@@ -5,6 +5,7 @@ const Block := preload("res://objects/block/block.tscn")
 const CardBase := preload("res://objects/card_base/card_base.tscn")
 const LevelMenu := preload("res://levels/chapter_menu/level_menu/level_menu.tscn")
 const TableCloth := preload("res://objects/table_cloth/table_cloth.tscn")
+const BaseLevel := preload("res://levels/base_level/base_level.tscn")
 const HEIGHT := 1080 / 4
 const WIDTH := 1920 / 4
 const SEP := 28
@@ -148,7 +149,7 @@ func stage_clear() -> void:
 		card_base.call("set_victory")
 		
 	$HUDs/TableCloth/GoldenCloth.set_visible(true)
-	
+	$HUDs/NextLevelButton.start_fade()
 
 
 func _on_card_put() -> void:
@@ -196,7 +197,16 @@ func _on_back_button_pressed():
 	get_tree().root.add_child(level_menu)
 	queue_free()
 
-
+func _on_next_level_button_pressed():
+	var base_level := BaseLevel.instantiate()
+	
+	if lvl_id == len(DATA[chap_id]) - 1:
+		base_level.init(chap_id + 1, 0)
+	else:
+		base_level.init(chap_id, lvl_id + 1)
+	get_tree().root.add_child(base_level)
+	queue_free()
+	
 func _on_replay_button_pressed():
 	for card_base: CardBase in $CardBases.get_children():
 		card_base.reset_all_card_position()
diff --git a/levels/base_level/base_level.tscn b/levels/base_level/base_level.tscn
index 1149324..e3df7fd 100644
--- a/levels/base_level/base_level.tscn
+++ b/levels/base_level/base_level.tscn
@@ -3,6 +3,7 @@
 [ext_resource type="Script" path="res://levels/base_level/base_level.gd" id="1_diojb"]
 [ext_resource type="PackedScene" uid="uid://xom5kpqs1rue" path="res://objects/calculator/calculator.tscn" id="1_tpuy7"]
 [ext_resource type="PackedScene" uid="uid://bepyyenjtc0p3" path="res://levels/chapter_menu/level_menu/level_button/level_button.tscn" id="2_0egdl"]
+[ext_resource type="PackedScene" uid="uid://d1mp3ld6wsrwo" path="res://levels/base_level/next_level_button/next_level_button.tscn" id="2_0363i"]
 [ext_resource type="Texture2D" uid="uid://bxda1ilvqwc6f" path="res://objects/styled_button/return1.png" id="3_4xtpo"]
 [ext_resource type="AudioStream" uid="uid://cjhl2qr4mau8g" path="res://levels/base_level/level_clear.wav" id="3_ou3kh"]
 [ext_resource type="FontFile" uid="uid://1000owdyvwfg" path="res://fonts/unifont-15.1.04.otf" id="3_q0kqv"]
@@ -52,6 +53,8 @@ script = ExtResource("1_diojb")
 
 [node name="HUDs" type="Node" parent="."]
 
+[node name="NextLevelButton" parent="HUDs" instance=ExtResource("2_0363i")]
+
 [node name="BackButton" parent="HUDs" instance=ExtResource("2_0egdl")]
 
 [node name="icon" type="AnimatedSprite2D" parent="HUDs/BackButton"]
@@ -91,10 +94,12 @@ centered = false
 
 [node name="LevelClear" type="AudioStreamPlayer2D" parent="SFXs"]
 stream = ExtResource("3_ou3kh")
+volume_db = -26.29
 
 [node name="WrongAnswer" type="AudioStreamPlayer2D" parent="SFXs"]
 stream = ExtResource("4_yxsxp")
 volume_db = 1.0
 
+[connection signal="pressed" from="HUDs/NextLevelButton" to="." method="_on_next_level_button_pressed"]
 [connection signal="pressed" from="HUDs/BackButton" to="." method="_on_back_button_pressed"]
 [connection signal="pressed" from="HUDs/ReplayButton" to="." method="_on_replay_button_pressed"]
diff --git a/levels/base_level/next_level_button/next_level_button.gd b/levels/base_level/next_level_button/next_level_button.gd
new file mode 100644
index 0000000..52b0ec9
--- /dev/null
+++ b/levels/base_level/next_level_button/next_level_button.gd
@@ -0,0 +1,22 @@
+extends Button
+
+
+const WIDTH := 1920 / 4
+const HEIGHT := 1080 / 4
+
+
+var fade_flag := false
+	
+
+func start_fade():
+	fade_flag = true
+	$FadeTimer.start()
+
+func _ready():
+	position = Vector2(WIDTH / 2 - 20, HEIGHT + 80)
+	$Word.set_word(">")
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	if fade_flag:
+		position.y = HEIGHT + 50    - 120 * (1 - pow($FadeTimer.time_left / $FadeTimer.wait_time, 1.5))
diff --git a/levels/base_level/next_level_button/next_level_button.tscn b/levels/base_level/next_level_button/next_level_button.tscn
new file mode 100644
index 0000000..914a25e
--- /dev/null
+++ b/levels/base_level/next_level_button/next_level_button.tscn
@@ -0,0 +1,11 @@
+[gd_scene load_steps=3 format=3 uid="uid://d1mp3ld6wsrwo"]
+
+[ext_resource type="PackedScene" uid="uid://bepyyenjtc0p3" path="res://levels/chapter_menu/level_menu/level_button/level_button.tscn" id="1_sa21d"]
+[ext_resource type="Script" path="res://levels/base_level/next_level_button/next_level_button.gd" id="2_yogj1"]
+
+[node name="NextLevelButton" instance=ExtResource("1_sa21d")]
+script = ExtResource("2_yogj1")
+
+[node name="FadeTimer" type="Timer" parent="." index="2"]
+wait_time = 0.3
+one_shot = true
diff --git a/levels/chapter_menu/level_menu/level_button/level_button.gd b/levels/chapter_menu/level_menu/level_button/level_button.gd
index 22744e3..6d8d0cd 100644
--- a/levels/chapter_menu/level_menu/level_button/level_button.gd
+++ b/levels/chapter_menu/level_menu/level_button/level_button.gd
@@ -1,4 +1,4 @@
-extends Button
+extends StyledButton
 
 signal enter_level(chapter_id:int, level_id : int)
 
@@ -36,7 +36,9 @@ func init(chapter_id: int, level_id : int, pos : Vector2, type : int) -> void :
 	button_type = type
 
 func _on_pressed():
-	# print("choose: ",chap_id,"-",lvl_id)
+	print("choose: ",chap_id,"-",lvl_id)
+	print("! ")
+	$SFXButtonDown.play()
 	if button_type == 1:
 		enter_level.emit(chap_id, lvl_id)
 	else:
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 ccd9efc..57ad4cf 100644
--- a/levels/chapter_menu/level_menu/level_button/level_button.tscn
+++ b/levels/chapter_menu/level_menu/level_button/level_button.tscn
@@ -4,7 +4,7 @@
 [ext_resource type="Script" path="res://levels/chapter_menu/level_menu/level_button/level_button.gd" id="1_wwqfn"]
 [ext_resource type="PackedScene" uid="uid://cvx7wowcbfo0r" path="res://objects/word/word.tscn" id="3_js2i2"]
 
-[node name="StyledButton" instance=ExtResource("1_4bgxw")]
+[node name="LevelButton" instance=ExtResource("1_4bgxw")]
 offset_right = 40.0
 offset_bottom = 40.0
 script = ExtResource("1_wwqfn")
@@ -12,5 +12,3 @@ script = ExtResource("1_wwqfn")
 [node name="Word" parent="." index="0" instance=ExtResource("3_js2i2")]
 position = Vector2(19, 19)
 scale = Vector2(1.5, 1.5)
-
-[connection signal="pressed" from="." to="." method="_on_pressed"]
diff --git a/objects/block/block.gd b/objects/block/block.gd
index a31bb03..cf08ae3 100644
--- a/objects/block/block.gd
+++ b/objects/block/block.gd
@@ -35,8 +35,6 @@ func set_word(e: String) -> void:
 func set_block_type(value: String) -> void:
 	if value == "GOLDEN":
 		$GoalFrameSprite.set_visible(true)
-		$GoalFrameSprite.set_texture(load("res://objects/block/goal_frame" + str(int(sqrt(randi_range(1, 16)))) + ".png"))
-		
 		$PitSprite.set_visible(true)
 	elif value == "PIT":
 		$GoalFrameSprite.set_visible(false)
diff --git a/objects/card/card.gd b/objects/card/card.gd
index 96ffabc..463a5ab 100644
--- a/objects/card/card.gd
+++ b/objects/card/card.gd
@@ -34,6 +34,7 @@ func _on_mouse_release():
 		last_occupied_area = entered_area
 		entered_area.occupied_word = $Word.get_word()
 		emit_signal("put")
+		$SFXPutDown.play()
 		# prints("card", $Word.get_word(), "put at", entered_area.name, "at global_position", global_position, "when origin global_position at", origin_global_position)
 	else:
 		global_position = last_global_position
@@ -108,3 +109,12 @@ func set_word(e: String) -> void:
 
 func get_word() -> String:
 	return $Word.get_word()
+
+
+
+
+func _on_mouse_entered():
+	$CardBackSprite.animation = "highlighted"
+
+func _on_mouse_exited():
+	$CardBackSprite.animation = "default"
diff --git a/objects/card/card.tscn b/objects/card/card.tscn
index 664f49a..6e08db5 100644
--- a/objects/card/card.tscn
+++ b/objects/card/card.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=9 format=3 uid="uid://b223s12rqgt4h"]
+[gd_scene load_steps=10 format=3 uid="uid://b223s12rqgt4h"]
 
 [ext_resource type="Script" path="res://objects/card/card.gd" id="1_0bviv"]
 [ext_resource type="PackedScene" uid="uid://cvx7wowcbfo0r" path="res://objects/word/word.tscn" id="1_ns36n"]
@@ -6,6 +6,7 @@
 [ext_resource type="Texture2D" uid="uid://c8qjbksyn1bqt" path="res://objects/card/card2.png" id="4_c30j1"]
 [ext_resource type="Texture2D" uid="uid://bevrfq1hhyqwe" path="res://objects/card/card3.png" id="5_w81n3"]
 [ext_resource type="Texture2D" uid="uid://cmcc5xrpkrd0f" path="res://objects/card/card_highlighted.png" id="6_po2i6"]
+[ext_resource type="AudioStream" uid="uid://cj4v8ehypq3sk" path="res://objects/card/put_down.wav" id="7_u4ylf"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_gu6l6"]
 
@@ -48,5 +49,11 @@ shape = SubResource("RectangleShape2D_gu6l6")
 
 [node name="CardBackSprite" type="AnimatedSprite2D" parent="."]
 sprite_frames = SubResource("SpriteFrames_fo0r0")
-animation = &"highlighted"
 autoplay = "default"
+
+[node name="SFXPutDown" type="AudioStreamPlayer2D" parent="."]
+stream = ExtResource("7_u4ylf")
+volume_db = 6.558
+
+[connection signal="mouse_entered" from="." to="." method="_on_mouse_entered"]
+[connection signal="mouse_exited" from="." to="." method="_on_mouse_exited"]
diff --git a/objects/card/put_down.wav b/objects/card/put_down.wav
new file mode 100644
index 0000000..d047914
Binary files /dev/null and b/objects/card/put_down.wav differ
diff --git a/objects/card/put_down.wav.import b/objects/card/put_down.wav.import
new file mode 100644
index 0000000..80ff91d
--- /dev/null
+++ b/objects/card/put_down.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://cj4v8ehypq3sk"
+path="res://.godot/imported/put_down.wav-4b821ef15f26d3e3b29c28f8d2015b38.sample"
+
+[deps]
+
+source_file="res://objects/card/put_down.wav"
+dest_files=["res://.godot/imported/put_down.wav-4b821ef15f26d3e3b29c28f8d2015b38.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=0
diff --git a/objects/card_base/card_base.gd b/objects/card_base/card_base.gd
index d0e9d63..4f03e87 100644
--- a/objects/card_base/card_base.gd
+++ b/objects/card_base/card_base.gd
@@ -9,6 +9,7 @@ signal card_put
 
 
 var fade_flag := false
+var mouse_on := false
 
 
 var card_count = 0
@@ -22,12 +23,12 @@ func _ready():
 
 func set_card_count(value):
 	card_count = value
-	if card_count == 2:
-		$AnimatedSprite2D.animation = "default"
-	elif card_count == 1:
-		# TODO: 更改 texture
-		$AnimatedSprite2D.animation = "default"
-	elif card_count == 0:
+	if card_count > 0:
+		if mouse_on:
+			$AnimatedSprite2D.animation = "highlighted"
+		else:
+			$AnimatedSprite2D.animation = "default"
+	else:
 		$AnimatedSprite2D.animation = "disabled"
 	update_card_count_label()
 
@@ -95,3 +96,14 @@ func _process(delta) -> void:
 		offset = (1 - pow(offset, 1.5)) * FADE_MOVE_AMOUNT
 		$AnimatedSprite2D.position.y = offset
 		$Word.position.y = offset
+
+
+func _on_mouse_entered():
+	mouse_on = true
+	if $AnimatedSprite2D.animation == "default":
+		$AnimatedSprite2D.animation = "highlighted"
+
+func _on_mouse_exited():
+	mouse_on = false
+	if $AnimatedSprite2D.animation == "highlighted":
+		$AnimatedSprite2D.animation = "default"
diff --git a/objects/card_base/card_base.tscn b/objects/card_base/card_base.tscn
index 3189131..3e0a797 100644
--- a/objects/card_base/card_base.tscn
+++ b/objects/card_base/card_base.tscn
@@ -41,6 +41,10 @@ animations = [{
 [node name="CardBase" type="Area2D"]
 script = ExtResource("1_k5qn1")
 
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("RectangleShape2D_2cmwb")
+debug_color = Color(0.65098, 0.431373, 0.756863, 0.419608)
+
 [node name="Word" parent="." instance=ExtResource("2_jvsp3")]
 z_index = 1
 frame_progress = 0.953211
@@ -55,9 +59,6 @@ text = "0"
 horizontal_alignment = 1
 vertical_alignment = 1
 
-[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
-shape = SubResource("RectangleShape2D_2cmwb")
-
 [node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="."]
 sprite_frames = SubResource("SpriteFrames_bhb3x")
 
@@ -73,3 +74,5 @@ one_shot = true
 
 [connection signal="area_entered" from="." to="." method="_on_area_entered"]
 [connection signal="area_exited" from="." to="." method="_on_area_exited"]
+[connection signal="mouse_entered" from="." to="." method="_on_mouse_entered"]
+[connection signal="mouse_exited" from="." to="." method="_on_mouse_exited"]
diff --git a/objects/styled_button/button_down.wav b/objects/styled_button/button_down.wav
new file mode 100644
index 0000000..a71d0ed
Binary files /dev/null and b/objects/styled_button/button_down.wav differ
diff --git a/objects/styled_button/button_down.wav.import b/objects/styled_button/button_down.wav.import
new file mode 100644
index 0000000..822578b
--- /dev/null
+++ b/objects/styled_button/button_down.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://dpwscp4bw7pay"
+path="res://.godot/imported/button_down.wav-577d8f023953f645606364b1089d1ba6.sample"
+
+[deps]
+
+source_file="res://objects/styled_button/button_down.wav"
+dest_files=["res://.godot/imported/button_down.wav-577d8f023953f645606364b1089d1ba6.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=0
diff --git a/objects/styled_button/styled_button.gd b/objects/styled_button/styled_button.gd
new file mode 100644
index 0000000..53dab9e
--- /dev/null
+++ b/objects/styled_button/styled_button.gd
@@ -0,0 +1,7 @@
+extends Button
+
+class_name StyledButton
+
+
+func _on_pressed():
+	$SFXButtonDown.play()
diff --git a/objects/styled_button/styled_button.tscn b/objects/styled_button/styled_button.tscn
index 8236470..fcfc19f 100644
--- a/objects/styled_button/styled_button.tscn
+++ b/objects/styled_button/styled_button.tscn
@@ -1,7 +1,9 @@
-[gd_scene load_steps=6 format=3 uid="uid://drl1xe103umpi"]
+[gd_scene load_steps=8 format=3 uid="uid://drl1xe103umpi"]
 
 [ext_resource type="Texture2D" uid="uid://cfbqh1k0etr6g" path="res://objects/card/card1.png" id="1_l6dpy"]
 [ext_resource type="Texture2D" uid="uid://cmcc5xrpkrd0f" path="res://objects/card/card_highlighted.png" id="2_j1sqk"]
+[ext_resource type="Script" path="res://objects/styled_button/styled_button.gd" id="3_rtcig"]
+[ext_resource type="AudioStream" uid="uid://dpwscp4bw7pay" path="res://objects/styled_button/button_down.wav" id="4_no3m1"]
 
 [sub_resource type="StyleBoxTexture" id="StyleBoxTexture_c0uot"]
 texture = ExtResource("1_l6dpy")
@@ -22,3 +24,10 @@ theme_override_styles/normal = SubResource("StyleBoxTexture_c0uot")
 theme_override_styles/hover = SubResource("StyleBoxTexture_eifmj")
 theme_override_styles/pressed = SubResource("StyleBoxTexture_eifmj")
 theme_override_styles/focus = SubResource("StyleBoxEmpty_tfhr0")
+script = ExtResource("3_rtcig")
+
+[node name="SFXButtonDown" type="AudioStreamPlayer2D" parent="."]
+stream = ExtResource("4_no3m1")
+volume_db = 10.306
+
+[connection signal="pressed" from="." to="." method="_on_pressed"]