Because Gong Yicheng angered Xie Wei, Xie Wei suffered from soul-leaving syndrome and killed Gong Yicheng.
Xie Wei was threatened. He had been threatened by King Pingnan and had wanted revenge for many years.His purpose in going to Beijing was to kill the Xue family, and this goal has never changed.However, he lost his mind when facing Gong Yi Cheng, quickly killed him with a knife, and completely lost his mind in the snowy night.
Gongyi Cheng was arrogant and rash, which aroused Xie Wei's illness.The death of Gong Yi Cheng was arranged into a situation where the spoils were unevenly distributed and he was killed. His body was left in the Ministry of Punishment, and maps of several of their strongholds in the capital were also left behind.
Zhang Zhe is a character who has doubts about the incident.He felt something was wrong, but wasn't sure why.He had doubts about Gong Yi Cheng's cause of death and the map, but needed more evidence to confirm his suspicions.