Why did Juck Zhang collapse?

Hao (Yu Liang) and Zhang (Chu Ying) both cheat and have a mental breakdown. According to relevant information, the three protagonists of Chess Soul all collapsed. Hao (Yu Liang) and Zhang (Chu Ying) both cheat and have a mental breakdown. Chess Soul is a youthful fantasy online drama directed by Hu Xianxu, Zhang, Hao, Zhao, Han Mubo and Sun Can. The play is adapted from the Japanese comic book Chess Soul, with Bai Weiling Horita as the original author and Takeshi Obata as the painter. It tells the story of an accidental opportunity. Time discovered an ancient chessboard, thus knowing Chu Ying, the first person in Nanliang Weiqi who has occupied the chessboard for thousands of years. Under his influence, he gradually became interested in Weiqi and encouraged himself to become a professional Weiqi player.