Due to marriages of his female family members, Epang was closely related to the ruling Weiming (Li) clan.
[8] On 5 March 1047, Empress Xuanmuhuiwen gave birth to Ninglingliangcha (Li Liangzuo), the future Emperor Yizong.
In 1048, Emperor Jingzong seduced Crown Princess, lady Meiyi (沒移氏) and conferred upon her a title of Empress.
During the hunt, dying lady Mozang was brought to the capital by the servants of Li Shougui (李守貴), her first love and subordinate of Yeli Yuqi.
[14] When Li Liangzuo reached the maturity age, Mozang Epang forced his daughter into a marriage with the teenage emperor in 1059 and was granted a title of Uncle of the State (國舅).
[15] When the attempt to harm Liangzuo fell through, both Epang and Empress Dowager Mozang were killed on the ground of treason and collusion with Khitan-led Liao dynasty.