Hi, I think you can visit any city of China during Chinese new year to experience the traditional Chinese festival. Well, it is cold in the northern cities like Harbin and Beijing during that time. It is warm in most southern cities like Guangzhou, Hangzhou and Kunming. Anyway, It depends on your interest. You may refer to China Tours(https://www.travelchinaguide.com/tour/default.htm) to make a perfect travel plan in China during that time.