Alex Richter shows Wing Tsun forms at his kung fuschool "City Wing Tsun" in New York, the United States, July 17, 2017. [Photo/Xinhua] Hidden in the midtown of bustling New York City is "City Wing ...

Alex Richter shows Wing Tsun forms at his kung fuschool "City Wing Tsun" in New York, the United States, July 17, 2017. [Photo/Xinhua] Hidden in the midtown of bustling New York City is "City Wing ...