What thickness clothes should I wear when traveling to Shanghai and Nanjing in the Spring Festival of 214?

jackets are ok, no problem. I arrived in Shanghai on the fifth day of last year and have been wearing jackets there. It will be cold, but it's acceptable. I'm from the northeast, too. It should be enough to wear a pair of autumn trousers, or wear a pair of thin wool trousers. Wear a thermal underwear under the fleece, and a thicker fleece will do.

the main thing is to find a good place to live. We really can't stand it without heating, and it will be damp and the quilt will be cold. If you take care of children, keep them warm and take more without suffering. It's colder inside than outside, really.