Chinese athletes Wei Yongli (L) and Tao Yujia swap the baton during the women's 4x100m relay at the 6th East Asian Games in Tianjin, Oct 9, 2013. They won the 4x100m relay in 43.66 seconds. [Photo/Xinhua]

Chinese athletes Chen Jianxin (L) and Zhang Yunpeng swap the baton during the men's 4x400m relay at the 6th East Asian Games in Tianjin, Oct 9, 2013. They won the 4x400m relay in 3 minutes 35.65 seconds. [Photo/Xinhua]