Tai chi teacher Chen Zhiwei instructs two foreign visitors at a private wushu school in Wenxian county, the origins of the ancient martial art in Central China's Henan province, April 8, 2013. Thousands of foreigners visit the county every year to learn tai chi. It is reported that more than 200 million people practice tai chi across the world. [Photo/Asianewsphoto]

Two foreigners perform tai chi at a private wushu school in Wenxian county, Central China's Henna province, April 8, 2013. [Photo/Asianewsphoto]