Reigning world number one Zhang Yining won the women's singles event at the World Table Tennis Championships on Tuesday, beating defending champion Guo Yue to regain the title she won in 2005.
The Beijing Olympic gold medallist, who was the favourite in Japan, stormed back from two games down for a 10-12, 3-11, 11-2, 11-7, 11-7, 11-9 victory over the world number two in the all-Chinese final.
Zhang, who lost to Guo in the 2007 championships, stretched her head-to-head record against Guo to 10 wins and four defeats.
It was China's 18th women's singles title at the world championships.
China had already assured itself of a clean sweep of all five titles in Yokohama, with all-Chinese finals in every event.
Chen Qi and Wang Hao won the men's doubles title, Guo Yue and Li Xiaoxia took the women's doubles, and Li Ping and Cao Zhen clinched the mixed doubles title.
In the men's final, Wang Hao will face Wang Liqin.