2 It’s a joy to open a can
3 Reunion (the name is simple but has a profound meaning)
4 The fourth one is more difficult because the style is too common, so it’s called ( (Unknown Secret) It’s only 7 characters, but I think it’s very attractive. It’s probably going to sell well if it’s called this. If you insist on 4 words, just quote Shangjiakou, which is a good idea.
I thought of it again
2 The slanting shadow of the streamer
3 The full moon in the leaves
4 Linked to each other