Place it at the very end of a chat-style edit, after the last line of dialogue, as the sign-off. Pair it with the WhatsApp Message Sound Button right before it to set up a phone conversation, then let this clip close the scene alone.
关于此声音
A very short voice clip of someone stretching out 'Tschööö', the casual German way of saying bye, into one drawn-out syllable that lasts under a second. It feels light and playful rather than final, like waving off a friend with a grin instead of closing a door, which makes the goodbye sound fond and a little cheeky.