✔ 最佳答案
I would suggest the couple weeks after Chinese New Year, somewhere in early Feb. You want to avoid the travel rush of people going back home for the holidays as well as going back to work the week after. Chinese New Year is Jan 26, so you can expect Jan 23 on would be super busy with air and train travel. Chinese New Year is celebrated up to a month after the first day, but most people are back at work a week later, so if you go the two weeks after Chinese New Year, you will still be able to see all the nice decorations but don't have to deal with the crowds and rush.