Competitors ride during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Competitors ride during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Ma Mingchen of Liaoning rides during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Competitors ride during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Liu Haiqi of Liaoning runs during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Sha Tianqi (2nd R) of Shandong rides during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Liu Haiqi (1st R) of Liaoning rides during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Zhong Mengying of Shandong rides during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Zhong Mengying (R) and Sha Tianqi of Shandong ride during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)

Liu Haiqi of Liaoning rides during the national duathlon competition online in Weihai City, east China's Shandong Province, June 7, 2020. (Xinhua/Zhu Zheng)