《魏书·列传·卷十九》
高肇嫉妒他的为人，想暗中把他排挤出去，就向世宗进言，声称中山是重要城镇，捍卫它需要大才，依据于忠的才能，适合担当此任。
高肇忌其为人，欲密出之，乃言于世宗，称中山要镇，作捍须才，以忠器能，宜居其位。
Gao Zhao was jealous of his character, and wanted to secretly push him out, so he advised Emperor Xiaowu, claiming that Zhongshan was an important town, and defending it required a great talent, and based on Yu Zhong's talent, he was suitable for this position.