Emperor Dezong commissioned Zhu to attack Li Weiyue from the north .
Zhu did so ; his victories eventually caused Li Weiyue 's subordinate Wang Wujun to assassinate Li Weiyue and surrender .
Emperor Dezong commissioned Zhu to attack Li Weiyue from the north , and Zhu did so ; his victories eventually caused Li Weiyue 's subordinate Wang Wujun to assassinate Li Weiyue and surrender .