Ask for accuracy! ! ! Who killed Xu You? I am a good historian, and I have a book Romance of the Three Kingdoms, which says that Xu You is Xu Zhu.

When Xu You was young, he was friends with Yuan Shao and Cao Cao. Later, he became Yuan Shao's counselor. He was deeply dissatisfied with his repeated suggestions to Yuan Shao. On the occasion of Xu You's original painting in the Battle of Guandu, Xu You went to Cao Cao because his family broke the law, provided important information, and suggested that Cao Cao attack the Wu Dynasty. As a result, he won a great victory. After the battle of Guandu, Xu You followed Cao Cao to pacify Jizhou and made great contributions. However, Xu You was so arrogant that he finally angered Cao Cao and was killed.

It was Cao Cao who killed him.