I'm going to Nanning from 9th - 20th December. What should I wear?

I have boots (uggs), thick coat, gloves, snow cap, long john etc. Are these suitable for me to be wearing when I'm there? I need to ask these questions cuz I don't wanna look ridiculous when I'm there with my school trip. People r told to wear their sports shoe. I don't think I'll be bringing any. I'll just wear my boots (uggs). So is it necessary? Or am I overdressed? The attire I just said, is it for colder countries like Canada, America, etc? I feel so ashamed lol
I'm 16 btw lol 😁So I might like to be pretty or dressed pretty lol
Thanks ❤