Chinese player Wang Shixian reacts during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Chinese player Wang Shixian complains with the umpire during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Indian player P.V. Sindhu competes during the women's singles match of the Yonex-Sunrise India Open 2014 against Chinese player Wang Shixian in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

 Chinese player Wang Shixian competes during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Chinese player Wang Shixian complains with the umpire during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Chinese player Wang Shixian competes during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Indian player P.V. Sindhu competes during a women's single match of the Yonex-Sunrise India Open 2014 in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Chinese player Wang Shixian (L) and Indian player P.V. Sindhu react during their women's singles match of the Yonex-Sunrise India Open 2014 in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)

Chinese player Wang Shixian competes during the women's singles match of the Yonex-Sunrise India Open 2014 against Indian player P.V. Sindhu in New Delhi, capital of India, April 2, 2014. Wang Shixian defeated Indian player P.V. Sindhu 2-1 on Wednesday and entered the next round of the tournament. (Xinhua/Zheng Huansong)