How to dress for a trip to Suzhou and Hangzhou this week?

The weather here is windy than in the north. Temperature 10-20 degrees. You'd better take a low-necked sweater. It is best to wear low-necked underwear and sweaters, and the coat should not be too thick. Just an ordinary jacket. You shouldn't wear woolen pants if you have pants. But I know that we southerners are more frost-resistant than northerners. So just to be on the safe side, you can take a pair of long pants. If you only have a pair of pants, I'm afraid you'll catch a cold sooner or later.