When my sister gets married, does my brother need to send money? Excuse me, Chaoshan people?

Well, the man is not married, so he usually doesn't need a gift. This is the Chaoshan custom.

But it's your sister after all. It's still good to give gifts, so there's no need to stick to tradition.

We often do things like singing, giving red envelopes and giving egg rolls, but it's a bit strange for a man to give eggs. A classmate once gave her amulets and jewelry, which girls liked very much.