Place it at the start of an opening sequence, then follow it with a bell ding to mark the shift into the main scene, and keep any sharper percussion for later so the opening stays unhurried.
关于此声音
This clip is a single udu drum hit, a hollow clay pot percussion tone that rings out for about five seconds with a warm, rounded resonance. It feels grounding and calm, like a slow heartbeat settling the room, and it works best as a quiet accent rather than a loud joke.