Zhang Lu
Ma Chao constantly asked Zhang Lu to give him some troops to attack Liang Province. Zhang Lu agreed, but Ma Chao failed to make any gains from the campaign. Yang Bai (楊白), an officer under Zhang Lu, was jealous of Ma Chao's ability and wanted to harm him. When Ma Chao heard about it, he escaped from Wudu (武都; around present-day Longnan, Gansu) and went to live with the Di people around the area.