Cai Huikang (R) of China's Shanghai SIPG FC vies with Leandro Damiao Santosof Japan's Kawasaki Frontale during the Group H match between China's Shanghai SIPG FC and Japan's Kawasaki Frontale at the 2019 AFC Champions League in Kawasaki, Japan, May 7, 2019. (Xinhua/Du Xiaoyi)