World champion Gong Lijiao won the women's shot put with a world-leading mark of 20.31 meters at the combined 2021 Chinese National Athletics Championships and Tokyo Olympic trials on Sunday.

The 31-year-old established her leading position in the first round with a 19.43 meters, and improved to 19.90 meters with her fifth attempt. In the last round, Gong hurled 20.31 meters to take an easy victory.

"Earlier I said my goal was to throw over 20 meters at this competition, now I have made it. I am expecting to be better in Tokyo, the gold medal is within my reach," said the two-time world champion.

23-year-old Song Jiayuan ranked second with 18.95 meters, securing another Tokyo Olympic berth for China.

At night, heavy rain hampered the athletes' performance. World champion Wang Yu gave up challenging 2.24 meters in the men's high jump, ranking third after Wu Guobiao and Wang Zhen who both cleared 2.20 meters.

Asian record holder Xie Zhenye clocked 20.57 seconds to win the men's 200 meters. "I am not afraid of running in the rain during the Tokyo Olympics. What I am going to do is to run faster than the others," said Xie.

The women's 200 meters final saw several runners pull out because of the downpour, leaving Huang Guifen to win in 23.53 seconds.

25-year-old Xu Shuangshuang suffered a setback in the women's 3,000 meters steeplechase, and failed to earn herself an Olympic slot.

Huang Changzhou leaped to 8.19 meters to secure victory in the men's long jump, while Huang Bokai won the men's pole vault with 5.50 meters. Veteran Dong Guojian took the men's 10,000 meters in 29 minutes and 49.77 seconds.

The men's and women's 400 meters hurdles were won by Xie Zhiyu and Zou Yifan, respectively. Delegation of China's Fujian Province won the men's 4x100 meters and 4x200 meters relay, and Zhejiang Province delegation finished first in the women's 4x100 meters relay.

Elsewhere, Zheng Xiaoqian claimed victory in the women's 1,500 meters, and Tian Zizhong won the men's shot put. The women's discus was won by Chen Yang with 64.21 meters, and Sichuan Province delegation won the first place in both women's and men's 4x400 meters relay.