Do people greet and chat when they meet acquaintances? Who can tell me what they will do when they meet acquaintances? Who can talk about skills? This is my trouble.

If you see him (her) and he (she) sees you, just say hello and nod with a smile. Just use our China greeting: "Have you eaten?" "; " Where are you going? "; " On the street? "Do you want to play?" . If you know each other better, you can say, "Hey, why are you dressed so beautifully today?" If you are more familiar with it, you will have a little chat. You can talk about the recent situation, your health, how are your parents, what's the weather like today, what happened after your last separation, and what happened to people you all know. If you are good at it, step by step, smile at your acquaintances, greet them and walk away.

It's really rude not to say hello to acquaintances. People will have opinions about you.