Yun Hengzhi's younger brother, also known as Second Master. He was kind and gentle. He wanted to stay away from court politics initially and left the capital for five years. He later reconciled with his elder brother. He secretly followed the army during the war and discovered enemy military plans but was killed by the enemy who wanted to make Yun Hengzhi watch his younger brother die. He was covered in blood when carried into the command tent. He begged Yun Hengzhi to take care of his pregnant wife before dying.
