Referee Guo Baolong (1st R) shows Xu Wu (No. 15) a yellow card during the 17th round match between Shanghai Greenland Shenhua and Chongqing Dangdai at 2020 season Chinese Football Association Super League (CSL) Suzhou Division in Suzhou, east China's Jiangsu Province, Oct. 27, 2020. (Xinhua/Xu Chang)
