On December 31, Beijing time, the 21st round of the Chinese Super League began to compete. In this round of relegation matches, Chongqing Liangjiang Athletic played against Shanghai Shenhua, Cangzhou Lions faced Dalian Renren, Qingdao team played against Tianjin Jinmen Tigers, and Henan Songshan Longmen faced Wuhan team.

Tianjin Jinmen Tigers beat Qingdao 1-0. The game entered injury time, Vinović opened a corner, Magno grabbed a nod and scored, and Tianjin Jinmen Tigers scored a killer goal.
Cangzhou Lions beat Dalian 2-0. In the 58th minute, the Cangzhou Lions had a counter-attack opportunity, Oscar burst into the box with the ball and pushed the goal, and the score on the court became 1-0. In the last moments of injury time, Dalian goalkeeper Zhang Chong's participation in the corner attack was not played back in time, and Oscar hung a shot at the empty goal.
Henan Songshan Longmen won 1-0 against Wuhan. In the 21st minute, Dorado's header from inside the penalty area was awarded, scoring the only goal of the game. In another match, Shanghai Shenhua and Chongqing Liangjiang Athletic Team exchanged white papers 0-0.
Shanghai Shenhua team accumulated 34 points to rank first in the relegation group, Henan Songshan Longmen team ranked second with 30 points, Cangzhou Lions and Wuhan team ranked 3rd and 4th respectively, these four teams have been successfully relegated in advance. Tianjin Jinmen Tigers in 5th place, Chongqing Liangjiang Athletic in 6th place and Dalian Renren in 7th place will have one team in the promotion and relegation play-off. The 8th-placed Qingdao team entered the promotion and relegation play-off round in the early round, and they will face each other against zhejiang team, the third place in the Chinese League One.