diff --git a/manager/audio_manager/audio_manager.gd b/manager/audio_manager/audio_manager.gd
index ec7b2615..264bdd2c 100644
--- a/manager/audio_manager/audio_manager.gd
+++ b/manager/audio_manager/audio_manager.gd
@@ -21,6 +21,7 @@ func _ready() -> void:
 	if Engine.is_editor_hint():
 		_reload_groups()
 
+
 func _create_and_add_new_player(index: int) -> void:
 	var sfx_player = RandomAudioStreamPlayer.new()
 	sfx_player.bus = "game_sfx"
@@ -45,7 +46,7 @@ func stop_stream(stream: AudioStream, duration := 1.0) -> void:
 				sfx_players.remove_at(i)
 				_create_and_add_new_player(i)
 				var tween = create_tween()
-				tween.tween_property(player, "volume_linear", 0.0, duration)
+				tween.tween_property(player, "volume_linear", 0.01, duration)
 				tween.tween_callback(player.queue_free)
 			else:
 				player.stop()
@@ -87,7 +88,7 @@ func stop_bgm_music(music_name: StringName, ease_duration := 3.0) -> void:
 			audio_player.queue_free()
 		else:
 			var tween = create_tween()
-			tween.tween_property(audio_player, "volume_linear", 0.0, ease_duration)
+			tween.tween_property(audio_player, "volume_linear", 0.01, ease_duration)
 			tween.tween_callback(audio_player.queue_free)
 		bgm_dict.erase(music_name)
 	else:
diff --git a/manager/config_manager/global_config.gd b/manager/config_manager/global_config.gd
index 8ffa538f..86d77d9f 100644
--- a/manager/config_manager/global_config.gd
+++ b/manager/config_manager/global_config.gd
@@ -63,6 +63,11 @@ const DIALOG_IGNORE_INPUT = "ignore_input"
 # memory layer: 30
 const DIALOG_MEM_LAYER = "mem_layer"
 
+# groups
+const GROUP_GROUND_SFX := "ground_sfx"
+const GROUP_GROUND_SFX2D := "ground_sfx2d"
+
+
 const CHARACTER_COLOR_MAP = {
 	"default": Color.LIGHT_SEA_GREEN,
 	"吕萍": Color.ORANGE,
diff --git a/scene/entity/audio/sfx.gd b/scene/entity/audio/sfx.gd
index e65d7378..a3825d20 100644
--- a/scene/entity/audio/sfx.gd
+++ b/scene/entity/audio/sfx.gd
@@ -12,6 +12,7 @@ const META_ORIGINAL_STREAM = &"original_stream"
 # TODO BGM 过程抑制场景音效；场景音效随玩家运动呼吸 (结合 Sfx2D)
 # 感应玩家移动：装饰音
 var default_db := 0.0
+var default_linear := 1.0
 
 # 只有 场景背景音 生效
 var scene_loop := true
@@ -21,6 +22,7 @@ var scene_sense_player_mov := false
 func _ready() -> void:
 	bus = &"game_sfx"
 	default_db = volume_db
+	default_linear = volume_linear
 	if Engine.is_editor_hint():
 		return
 	# 记录原 stream
@@ -104,12 +106,12 @@ func global_stop(duration := 1.5) -> void:
 func easing_kill(duration: float = 2.0) -> Tween:
 	# stop with easing
 	var tween = create_tween()
-	tween.bind_node(self)
 	if playing:
-		tween.tween_property(self, "volume_linear", 0.0, duration)
+		tween.tween_property(self, "volume_linear", 0.01, duration)
 		tween.tween_callback(stop)
 		# set volume_db back to default
 		tween.tween_callback(func(): volume_db = default_db)
+	tween.tween_interval(0.001) # 防止 no step
 	return tween
 
 
@@ -164,3 +166,14 @@ func _get(property: StringName) -> Variant:
 		return scene_sense_player_mov
 	return null
 
+
+func change_volumn_db(changed_volumn_db: float, duration := 1.0) -> void:
+	if changed_volumn_db != 0.0:
+		var target_linear = db_to_linear(default_db + changed_volumn_db)
+		var tween = create_tween()
+		tween.tween_property(self, "volume_linear", target_linear, duration)
+
+
+func reset_volumn_to_default(duration := 1.0) -> void:
+	var tween = create_tween()
+	tween.tween_property(self, "volume_linear", default_linear, duration)
\ No newline at end of file
diff --git a/scene/entity/audio/sfx2d.gd b/scene/entity/audio/sfx2d.gd
index fc3c873a..a1c0a055 100644
--- a/scene/entity/audio/sfx2d.gd
+++ b/scene/entity/audio/sfx2d.gd
@@ -18,6 +18,7 @@ class_name Sfx2D extends AudioStreamPlayer2D
 
 var timer: Timer
 var default_db := 0.0
+var default_linear := 1.0
 
 func _ready() -> void:
 	bus = &"game_sfx"
@@ -25,6 +26,7 @@ func _ready() -> void:
 	if Engine.is_editor_hint():
 		return
 	default_db = volume_db
+	default_linear = volume_linear
 	timer = Timer.new()
 	timer.autostart = autoplay and loop and loop_round_time > 0.0 and not Engine.is_editor_hint()
 	timer.one_shot = false
@@ -43,7 +45,6 @@ func _on_ground_transition_pre_paused():
 	easing_kill(1.0)
 
 
-
 func _on_timer_timeout() -> void:
 	if not loop or loop_round_time <= 0.0:
 		timer.stop()
@@ -73,8 +74,21 @@ func easing_kill(duration: float = 2.0) -> Tween:
 	var tween = create_tween()
 	tween.bind_node(self)
 	if playing:
-		tween.tween_property(self, "volume_linear", 0.0, duration)
+		tween.tween_property(self, "volume_linear", 0.01, duration)
 		tween.tween_callback(stop)
 		# set volume_db back to default
 		tween.tween_callback(func(): volume_db = default_db)
+	tween.tween_interval(0.001) # 防止 no step
 	return tween
+
+
+func change_volumn_db(changed_volumn_db: float, duration := 1.0) -> void:
+	if changed_volumn_db != 0.0:
+		var target_linear = db_to_linear(default_db + changed_volumn_db)
+		var tween = create_tween()
+		tween.tween_property(self, "volume_linear", target_linear, duration)
+
+
+func reset_volumn_to_default(duration := 1.0) -> void:
+	var tween = create_tween()
+	tween.tween_property(self, "volume_linear", default_linear, duration)
\ No newline at end of file
diff --git a/scene/entity/closeup.gd b/scene/entity/closeup.gd
index 4ff09c07..28293835 100644
--- a/scene/entity/closeup.gd
+++ b/scene/entity/closeup.gd
@@ -8,6 +8,8 @@ signal exit(arg)
 
 @export var packed_scene: PackedScene
 @export var quit_closeup_on_cancel := true
+@export var on_display_change_volumn := true
+@export var on_display_changed_volumn_db := -7.0
 @export_tool_button("新建特写场景") var create_closeup_scene = _create_scene_with_script
 # 在 exit 信号前，禁用 cancel
 var _holding_cancel_before_exit := false
@@ -31,6 +33,9 @@ func display() -> void:
 	if current_child:
 		return
 	if packed_scene:
+		if on_display_change_volumn:
+			get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX, "change_volumn_db" , on_display_changed_volumn_db)
+			get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX2D, "change_volumn_db" , on_display_changed_volumn_db)
 		SceneManager.lock_player(0, action_key)
 		# 展示时，禁用 sign_mark 的输入
 		sign_mark.pass_unhandled_input = true
@@ -44,10 +49,12 @@ func display() -> void:
 
 func _exit(arg = null):
 	if current_child:
+		if on_display_change_volumn:
+			get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX, "reset_volumn_to_default")
+			get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX2D, "reset_volumn_to_default")
 		SceneManager.unlock_player()
-		if current_child:
-			remove_child(current_child)
-			current_child.queue_free()
+		remove_child(current_child)
+		current_child.queue_free()
 		current_child = null
 		print("quit [", name, "] arg=", arg)
 		exit.emit(arg)
diff --git a/scene/ground/ground.gd b/scene/ground/ground.gd
index 750b1663..63edaa2a 100644
--- a/scene/ground/ground.gd
+++ b/scene/ground/ground.gd
@@ -75,6 +75,7 @@ func _ready() -> void:
 		return
 	_setup_scene()
 	_setup_runtime()
+	_arrange_nodes_to_group(self)
 
 
 func _handle_restart() -> void:
@@ -101,6 +102,17 @@ func _setup_runtime() -> void:
 	SceneManager.toggle_hud_display(display_hud)
 
 
+func _arrange_nodes_to_group(parent: Node) -> void:
+	if not parent:
+		return
+	for c in parent.get_children():
+		_arrange_nodes_to_group(c)
+		if c is Sfx:
+			c.add_to_group(GlobalConfig.GROUP_GROUND_SFX)
+		elif c is Sfx2D:
+			c.add_to_group(GlobalConfig.GROUP_GROUND_SFX2D)
+
+
 func _restart_from_main() -> void:
 	# _enter_tree, wait for ready
 	await ready
diff --git a/scene/ground/ground.tscn b/scene/ground/ground.tscn
index 6b00ae9b..e1816f4b 100644
--- a/scene/ground/ground.tscn
+++ b/scene/ground/ground.tscn
@@ -49,9 +49,14 @@ unique_name_in_owner = true
 position = Vector2(41, 88)
 reenter_lock = NodePath("../PlayerReenterLock")
 camera_marker = NodePath("../CameraFocusMarker")
+player_movement_rect = Rect2(20, -158, 524, 316)
 
 [node name="CameraFocusMarker" parent="." node_paths=PackedStringArray("focusing_node") instance=ExtResource("4_mgk0a")]
 unique_name_in_owner = true
+limit_left = 0
+limit_top = -158
+limit_right = 564
+limit_bottom = 158
 focusing_node = NodePath("../MainPlayer")
 
 [node name="ParallaxForeground" type="ParallaxBackground" parent="."]
@@ -81,6 +86,7 @@ height = 0.5
 
 [node name="FootstepAudioPlayer" type="AudioStreamPlayer" parent="."]
 unique_name_in_owner = true
+volume_db = -5.0
 bus = &"game_sfx"
 script = ExtResource("5_7mb2q")
 metadata/_custom_type_script = "uid://dpnny2y808k71"
diff --git a/scene/ground/scene/c01/s08_书店.gd b/scene/ground/scene/c01/s08_书店.gd
index ff0fe0f2..ab9c6399 100644
--- a/scene/ground/scene/c01/s08_书店.gd
+++ b/scene/ground/scene/c01/s08_书店.gd
@@ -120,6 +120,7 @@ func play_shelf_game() -> void:
 	if shelf_game_node.get_parent() != get_parent():
 		get_parent().add_child(shelf_game_node)
 	SceneManager.lock_player()
+	_toggle_amb_sfx_volumn(true)
 
 
 func _on_shelf_game_exiting() -> void:
@@ -127,9 +128,11 @@ func _on_shelf_game_exiting() -> void:
 		print("书架游戏 exiting")
 	create_tween().tween_property(mask, "color:a", 0.0, 1.0).from(1.0)
 	SceneManager.unlock_player()
+	_toggle_amb_sfx_volumn(false)
 
 
 func _on_shelf_game_success() -> void:
+	_toggle_amb_sfx_volumn(false)
 	ArchiveManager.set_global_entry(&"c01_shelf_game_success", true)
 	shelf_game_success = true
 	_setup_weird_bookstore()
@@ -187,6 +190,7 @@ func play_envelope_game() -> void:
 	if envelope_game_node.get_parent() != get_parent():
 		get_parent().add_child.call_deferred(envelope_game_node)
 	SceneManager.lock_player()
+	_toggle_amb_sfx_volumn(true)
 
 
 func _on_envelope_game_exiting() -> void:
@@ -194,6 +198,7 @@ func _on_envelope_game_exiting() -> void:
 		print("信封游戏 exiting")
 	create_tween().tween_property(mask, "color:a", 0.0, 1.0).from(1.0)
 	SceneManager.unlock_player()
+	_toggle_amb_sfx_volumn(false)
 
 
 func _on_envelope_game_success() -> void:
@@ -203,6 +208,7 @@ func _on_envelope_game_success() -> void:
 	envelope_game_success = true
 	_check_portal()
 	SceneManager.unlock_player()
+	_toggle_amb_sfx_volumn(false)
 
 
 func pay_off_wage() -> void:
@@ -213,3 +219,10 @@ func pay_off_wage() -> void:
 
 func _on_quit_inspect_coin() -> void:
 	SceneManager.pop_os_with_str("c01_s08_获得袁大头后")
+
+
+func _toggle_amb_sfx_volumn(hold_down: bool) -> void:
+	if hold_down:
+		get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX, "change_volumn_db", -7.0)
+	else:
+		get_tree().call_group(GlobalConfig.GROUP_GROUND_SFX, "reset_volumn_to_default")
diff --git a/scene/ground/scene/c01/s08_书店.tscn b/scene/ground/scene/c01/s08_书店.tscn
index 023c65d4..c71f13fb 100644
--- a/scene/ground/scene/c01/s08_书店.tscn
+++ b/scene/ground/scene/c01/s08_书店.tscn
@@ -44,7 +44,7 @@ script = ExtResource("2_0lque")
 [node name="环境音" type="AudioStreamPlayer" parent="Ground/AnimationPlayer" index="0"]
 process_mode = 1
 stream = ExtResource("3_0x288")
-volume_db = -8.0
+volume_db = 5.0
 autoplay = true
 bus = &"game_sfx"
 script = ExtResource("4_p6k3c")
@@ -56,7 +56,7 @@ metadata/_custom_type_script = "uid://rq6w1vuhuq1m"
 [node name="诡异环境音" type="AudioStreamPlayer" parent="Ground/AnimationPlayer" index="1"]
 process_mode = 1
 stream = ExtResource("5_eerhd")
-volume_db = -7.0
+volume_db = -4.0
 bus = &"game_sfx"
 script = ExtResource("4_p6k3c")
 mode = "场景背景音"
@@ -191,10 +191,7 @@ character = "小小蝶"
 player_movement_rect = Rect2(22, -158, 523, 316)
 
 [node name="CameraFocusMarker" parent="Ground" index="6"]
-limit_left = 0
-limit_top = -158
 limit_right = 576
-limit_bottom = 158
 
 [node name="FGSprite2D" parent="Ground/ParallaxForeground/FGParallaxLayer" index="0"]
 position = Vector2(-1, 22)
diff --git a/scene/ground/scene/c02/s03_院子.gd b/scene/ground/scene/c02/s03_院子.gd
index 42120474..97f5ee6e 100644
--- a/scene/ground/scene/c02/s03_院子.gd
+++ b/scene/ground/scene/c02/s03_院子.gd
@@ -89,7 +89,7 @@ func _on_ground_ready() -> void:
 		$"../DeployLayer/portal_5".enabled = false
 
 
-	if ArchiveManager.get_global_value(&"c02_show_grounded_coins") and EventManager.get_chapter_stage() < 3:
+	if ArchiveManager.get_global_value(&"c02_show_grounded_coins") and EventManager.get_chapter_stage() <= 2:
 		# 奠字 + 纸钱
 		$"../DeployLayer/新背景_奠".visible = true
 
diff --git a/scene/ground/scene/c02/s04_保卫科.tscn b/scene/ground/scene/c02/s04_保卫科.tscn
index e021873b..68c019e9 100644
--- a/scene/ground/scene/c02/s04_保卫科.tscn
+++ b/scene/ground/scene/c02/s04_保卫科.tscn
@@ -136,12 +136,6 @@ position = Vector2(447, 98)
 player_movement_rect = Rect2(66, -158, 429, 316)
 facing_direction = Vector2(-1, 0)
 
-[node name="CameraFocusMarker" parent="Ground" index="6"]
-limit_left = 0
-limit_top = -158
-limit_right = 564
-limit_bottom = 158
-
 [node name="FGSprite2D" parent="Ground/ParallaxForeground/FGParallaxLayer" index="0"]
 position = Vector2(45, -76)
 scale = Vector2(1.05, 1.05)
diff --git a/scene/ground/scene/c02/s05_一楼内侧楼道.tscn b/scene/ground/scene/c02/s05_一楼内侧楼道.tscn
index 2be4d016..ddd3cfae 100644
--- a/scene/ground/scene/c02/s05_一楼内侧楼道.tscn
+++ b/scene/ground/scene/c02/s05_一楼内侧楼道.tscn
@@ -185,6 +185,7 @@ hook_method = "wood_puppet"
 position = Vector2(-108, -168)
 packed_scene = ExtResource("10_7mq0m")
 quit_closeup_on_cancel = false
+on_display_changed_volumn_db = -50.0
 action_key = 3
 first_interact_os_key = "c02_一楼戏台"
 
@@ -349,10 +350,7 @@ player_movement_rect = Rect2(23, -158, 677, 316)
 current = true
 
 [node name="CameraFocusMarker" parent="Ground" index="6"]
-limit_left = 0
-limit_top = -158
 limit_right = 716
-limit_bottom = 158
 
 [node name="FGSprite2D" parent="Ground/ParallaxForeground/FGParallaxLayer" index="0"]
 position = Vector2(45, -9)
diff --git a/scene/ground/scene/c02/s08_瞎子卧室.gd b/scene/ground/scene/c02/s08_瞎子卧室.gd
index be7c6578..2e42920c 100644
--- a/scene/ground/scene/c02/s08_瞎子卧室.gd
+++ b/scene/ground/scene/c02/s08_瞎子卧室.gd
@@ -30,8 +30,8 @@ func _on_ground_ready() -> void:
 	ambush_lookback = $"../DeployLayer/Ambush回看洞口"
 	gaslight = $"../DeployLayer/灯座Sprite2D/煤油灯"
 	boxcat_portal = $"../DeployLayer/portal_1"
-	# 0默认 1拿了麻将 2偷听结束 3已爬出
-	if data.hole_interacted_times >= 3:
+	# 0默认 1偷听结束 2已爬出 （不再拿麻将）
+	if data.hole_interacted_times >= 2:
 		setup_rect_after_entered()
 	else:
 		color_mask.color.a = 1.0
@@ -88,8 +88,6 @@ func hole_interacted():
 		print("hole_interacted_times=", times)
 
 	if times == 0:
-		SceneManager.enable_prop_item("prop_麻将")
-	elif times == 1:
 		# 注意：每种情况结束后，都需要将 interacting 设置为 false
 		interacting = true
 		eavesdrop_start()
diff --git a/scene/ground/scene/c02/s08_瞎子卧室.tscn b/scene/ground/scene/c02/s08_瞎子卧室.tscn
index 9500c78d..8d241105 100644
--- a/scene/ground/scene/c02/s08_瞎子卧室.tscn
+++ b/scene/ground/scene/c02/s08_瞎子卧室.tscn
@@ -5,6 +5,7 @@
 [ext_resource type="Texture2D" uid="uid://v3sj36aijq5b" path="res://asset/art/scene/c03/s04_瞎子新卧室/bg_瞎子卧室.png" id="3_iares"]
 [ext_resource type="Script" uid="uid://cpejxlfni6n52" path="res://manager/audio_manager/vibe_sfx.gd" id="3_quq80"]
 [ext_resource type="Texture2D" uid="uid://v3sj36aijq5b" path="res://asset/art/scene/c02/s08_瞎子卧室/bg_瞎子卧室.png" id="3_iares"]
+[ext_resource type="AudioStream" uid="uid://b2mudqvq1dmng" path="res://asset/audio/sfx/环境音/白噪音/白噪声房间里1.ogg" id="3_nnqdd"]
 [ext_resource type="Script" uid="uid://rq6w1vuhuq1m" path="res://scene/entity/audio/sfx.gd" id="3_t3h08"]
 [ext_resource type="PackedScene" uid="uid://61pis75a8fdq" path="res://scene/entity/portal.tscn" id="4_1ws4i"]
 [ext_resource type="Texture2D" uid="uid://vqyhgyka3sfo" path="res://asset/art/scene/c03/s04_瞎子新卧室/瞎子卧室前景.png" id="4_gx8oy"]
@@ -13,7 +14,6 @@
 [ext_resource type="Texture2D" uid="uid://7ay1ttob8qwm" path="res://asset/art/scene/c03/s04_瞎子新卧室/e_床板.png" id="5_vjjde"]
 [ext_resource type="AudioStream" uid="uid://c26x8f18w6is0" path="res://asset/audio/sfx/旧版/c02/撞到柜子.mp3" id="6_nnqdd"]
 [ext_resource type="Texture2D" uid="uid://vqyhgyka3sfo" path="res://asset/art/scene/c02/s08_瞎子卧室/瞎子卧室前景.png" id="4_gx8oy"]
-[ext_resource type="AudioStream" uid="uid://o57tyriodr0c" path="res://asset/audio/sfx/环境音/白噪音/白噪声房间里2.ogg" id="4_quq80"]
 [ext_resource type="AudioStream" uid="uid://dk3e1w3n2snur" path="res://asset/audio/sfx/旧版/c02/纸人出现.ogg" id="5_0qeqe"]
 [ext_resource type="Texture2D" uid="uid://b5pwb4fm46sad" path="res://asset/art/scene/c02/s08_瞎子卧室/e_墙上纸张.png" id="5_f6mma"]
 [ext_resource type="Texture2D" uid="uid://7ay1ttob8qwm" path="res://asset/art/scene/c02/s08_瞎子卧室/e_床板.png" id="5_vjjde"]
@@ -120,7 +120,7 @@ script = ExtResource("2_m4uw8")
 
 [node name="Sfx背景音" type="AudioStreamPlayer" parent="Ground/AnimationPlayer" index="0"]
 process_mode = 1
-stream = ExtResource("4_quq80")
+stream = ExtResource("3_nnqdd")
 volume_db = -5.0
 autoplay = true
 bus = &"game_sfx"