Chinese player Yan Zi returns the ball against Czech Nicole Vaidisova during a women's single of Hong Kong World Champions Challenge in Hong Kong Special administrative Region on January 5, 2007. Yan won 2-0.

Chinese player Yan Zi serves during a women's single of Hong Kong World Champions Challenge against Czech Nicole Vaidisova in Hong Kong Special Administrative Region on?January 5, 2007.

Chinese player Yan Zi returns the ball against Czech Nicole Vaidisova during a women's single of Hong Kong World Champions Challenge in Hong Kong Special Administrative Region on?January 5, 2007.

Czech Nicole Vaidisova returns the ball against China's Yan Zi during a women's single of Hong Kong World Champions Challenge in Hong Kong Special Administrative Region on?January 5, 2007.

(Xinhua News Agency January 6, 2007)