 Complete the following phrase:  At the age of 16, she just missed out on a medal in the 400 m at the 2001 World Youth Championships in Athletics. Following this she made a number of appearances with the 4 x 400 metres relay team, taking silver at the 2002 Asian Games. She made her first appearance on the senior world stage when she took part in the 4 x 400 relay race at the 2003 World Championships in Athletics. She won further silver relay medals at the 