The flag ceremony is held during the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou) 

Volunteers are see on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Volunteers are see on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Liang Xu)

 Liu Peng (bottom, L), minister of Chinese General Administration of Sports, speaks at the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

The flag ceremony is held during the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Liang Xu)

Liu Peng, minister of the Chinese General Administration of Sports, speaks during the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

 Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

 Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Xiao Yijiu)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Xiao Yijiu) 

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Yang Zongyou)

 Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Li Qiaoqiao)

Dancers perform on the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Huang Xiaobang)

Liu Peng, minister of the Chinese General Administration of Sports, speaks during the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Zhou Hua)

Peng Qinghua, secretary of Guangxi Zhuang Autonomous Regional Committee of the Communist Party of China, speaks during the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Zhou Hua)

 Ma Biao, vice chairman of the National Committee of the Chinese People's Political Consultative Conference, announces the opening of the finals of the 45th Gymnastics World Championships in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Oct. 7, 2014. The finals of the 45th FIG Artistic Gymnastics World Championships started Tuesday in Nanning. (Xinhua/Zhou Hua)