The migration app of choice appears to be .. xiaohongshu, or "little red book". I'm guessing this won't last since it wasn't intended to have lots of Westerners using it and neither government is going to be happy with that scale of unfiltered contact between ordinary Chinese citizens and US citizens.
In the meantime, it's the place for Luigi Mangione memes.
In the meantime, it's the place for Luigi Mangione memes.