Lu Mowei is the fiancé of Gu Qingcheng's younger half-sister. He elopes with Gu Qingcheng on the eve of her wedding, but it is a scheme to secretly deal with the Prime Minister's Residence. He holds a grudge against the Prime Minister and fabricates evidence of treason, submitting it to the Emperor. His actions precipitate the crisis that forces Gu Qingcheng to seek Shen Que's help, driving the plot forward.
