Xie Wenjun (L) of China competes during the men's 110m hurdles heat at the IAAF Diamond League meeting in Paris, France, June 30, 2018. (Xinhua/Jean-Marie Hervio)

Su Bingtian (C) of China competes during the men's 100m final at the IAAF Diamond League meeting in Paris, France, June 30, 2018. Su Bingtian won the bronze medal with 9.91 seconds. (Xinhua/Jean-Marie Hervio)

Su Bingtian (L) of China reacts after the men's 100m final at the IAAF Diamond League meeting in Paris, France, June 30, 2018. Su Bingtian won the bronze medal with 9.91 seconds. (Xinhua/Jean-Marie Hervio)

Xie Wenjun (L) of China competes during the men's 110m hurdles heat at the IAAF Diamond League meeting in Paris, France, June 30, 2018. (Xinhua/Jean-Marie Hervio)

Xie Wenjun (L) of China competes during the men's 110m hurdles heat at the IAAF Diamond League meeting in Paris, France, June 30, 2018. (Xinhua/Jean-Marie Hervio)

Su Bingtian (C) of China competes during the men's 100m final at the IAAF Diamond League meeting in Paris, France, June 30, 2018. Su Bingtian won the bronze medal with 9.91 seconds. (Xinhua/Jean-Marie Hervio)

Su Bingtian of China competes during the men's 100m final at the IAAF Diamond League meeting in Paris, France, June 30, 2018. Su Bingtian won the bronze medal with 9.91 seconds. (Xinhua/Jean-Marie Hervio)

Xie Wenjun (L) of China competes during the men's 110m hurdles heat at the IAAF Diamond League meeting in Paris, France, June 30, 2018. (Xinhua/Jean-Marie Hervio)