diff --git a/manager/audio_manager/vibe_group.gd b/manager/audio_manager/vibe_group.gd
index 5638cf4e..88eed41f 100644
--- a/manager/audio_manager/vibe_group.gd
+++ b/manager/audio_manager/vibe_group.gd
@@ -22,18 +22,3 @@ extends Resource
 # 你也可以直接在这里新建 Embellishment 资源，实现“特制wav”的需求。
 @export var embellishments: Array[Embellishment]
 
-
-# func _init() -> void:
-# 	if not Engine.is_editor_hint():
-# 		return
-# 	var root = EditorInterface.get_edited_scene_root()
-# 	if not root:
-# 		return
-# 	var ground = root.get_node_or_null("Ground") as Ground2D
-# 	if not ground:
-# 		return
-# 	var scene_name = ground.scene_name
-# 	# 检查 group_name 是否以 scene_name 开头
-# 	if not group_name.begins_with(scene_name):
-# 		group_name = scene_name + "_" + group_name
-# 		print("VibeGroup: Auto-prefixed group_name to %s" % group_name)
diff --git a/project.godot b/project.godot
index fb93cb8d..2104e06b 100644
--- a/project.godot
+++ b/project.godot
@@ -111,6 +111,7 @@ folder_colors={
 [global_group]
 
 balloon=""
+ground=""
 
 [gui]
 
diff --git a/scene/entity/ux/sign_snapper.gd b/scene/entity/ux/sign_snapper.gd
index 99ace52a..99df5bc5 100644
--- a/scene/entity/ux/sign_snapper.gd
+++ b/scene/entity/ux/sign_snapper.gd
@@ -62,7 +62,11 @@ func _on_interacted():
 func _debug_check_player_pos():
 	if not Engine.is_editor_hint():
 		return
-	var ground = EditorInterface.get_edited_scene_root().get_node("Ground") as Ground2D
+	var grounds = get_tree().get_nodes_in_group("ground")
+	if not grounds:
+		printerr("no ground")
+		return
+	var ground = grounds[0]
 	if use_x_only:
 		ground.replace_player_to_portal = true
 	var player = ground.player
diff --git a/scene/ground/ground.tscn b/scene/ground/ground.tscn
index 41d744ad..a840c9e2 100644
--- a/scene/ground/ground.tscn
+++ b/scene/ground/ground.tscn
@@ -14,7 +14,7 @@ gradient = SubResource("Gradient_p7aaq")
 width = 15000
 height = 500
 
-[node name="Ground" type="Node2D"]
+[node name="Ground" type="Node2D" groups=["ground"]]
 script = ExtResource("1_0vrlo")
 
 [node name="AnimationPlayer" type="AnimationPlayer" parent="."]