Tang Xiaoyin and Huang Xiaoxiao in action (Apr 21)

Waco (Texas). National champion, Tang Xiaoyin of Guangdong started the season with 52.79s in 400m while Huang Xiaoxiao, 5th in 2005 world championships had a opener of 55.81s in 400m Hurdle. Huang also clocked 52.76s in 400m a few weeks ago.