Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Irina-Camelia Begu of Romania returns the ball during the women's singles first round match with Zhu Lin of China at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China returns the ball during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Irina-Camelia Begu of Romania returns the ball during the women's singles first round match with Zhu Lin of China at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)

Zhu Lin of China competes during the women's singles first round match with Irina-Camelia Begu of Romania at French Open tennis tournament 2019 at Roland Garros, in Paris, France on May 28, 2019. (Xinhua/Han Yan)