 Complete the following phrase:  Her senior international debut followed a few months later at the 1993 Asian Athletics Championships. At the competition in Manila she led the Chinese challenge in the 400 m hurdles and took the silver medal behind Kazakhstans Natalya Torshina. In 1994 she won her first and only national title at the Chinese Athletics Championships with a time of 56.28 seconds. This gained her selection for China at the 