Feature: Former world champion brings Tai Chi into New Yorkers' life

?

Chen Sitan and his wife Lin Xu perform at Times Sqaure in New York, the United States, Sept. 10, 2017. The ancient Chinese martial art Tai Chi has increasingly become a form of life for many New Yorkers, thanks to the efforts made by former world martial art champion Chen Sitan and his wife Lin Xu. (Xinhua)