Yang Shaohui (front) of China competes during the Men's Marathon at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Xu Suhui)

Athletes compete during the Men's Marathon at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Xu Suhui)

Sifan Hassan (1st L) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Li Ming)

Sifan Hassan (1st R) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Li Ming)

Sifan Hassan (front 1st R) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Jia Yuchen)

Sifan Hassan (1st R) of the Netherlands competes during the Women's 1500m Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Wang Jingqiang)

Liang Xiaojing (R) and Wei Yongli of Team China compete during the women's 4X100m relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, on Oct. 5, 2019. (Xinhua/Wang Lili)

Liang Xiaojing, Ge Manqi, Wei Yongli and Kong Lingwei of Team China (from L to R) pose for photos after the women's 4X100m relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, on Oct. 5, 2019. (Xinhua/Li Gang)

Liang Xiaojing (3rd R) of Team China passes the baton to Wei Yongli (3rd L) during the women's 4X100m relay final at the 2019 IAAF World Athletics Championships in Doha, Qatar, on Oct. 5, 2019. (Xinhua/Li Ming)

Venezuelan Yulimar Rojas competes during the Women's Triple Jump Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Li Ming)

Caterine Ibarguen of Colombia competes during the Women's Triple Jump Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Wang Lili)

Caterine Ibarguen of Colombia competes during the Women's Triple Jump Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Xu Suhui)

Shanieka Ricketts of Jamaica competes during the Women's Triple Jump Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Xu Suhui)

Venezuelan Yulimar Rojas competes during the Women's Triple Jump Final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 5, 2019. (Xinhua/Wang Lili)