Put it at the point where the photo is about to be taken, then show the finished picture and follow it with a cheer to close the moment, keeping the photo as the payoff.
关于此声音
This is a short Vietnamese spoken line, lasting just under ten seconds, in which the speaker says they will take a photo for their uncle. It has a light, playful feeling that fits an everyday family moment, turning a simple request into a small shared laugh. The familiar wording makes it easy to recognise and fun to reuse.