Xun You made an attempt on Dong Zhuo’s life
Xun You’s ZZTG states
In 192, Xun You, along with two men named Zheng Tai and Chong Ji, made plans to assassinate Dong Zhuo. They were discovered and Xun You was arrested while Zheng Tai fled to Yuan Shu. Fortunately for Xun You, Dong Zhuo was subsequently assassinated by Lü Bu and Wang Yun, so Xun You was released from prison.