On the eve of the divorce, Shen Qingwu looked through the account books of the East Palace for the past three years and found that the prince Xiao Jingyan paid a fixed amount of "drug residue disposal fee" every month, but the drug shop owner never received this money. She followed the clues to a pawn shop on the outskirts of the city, and pieced together the truth about the prince's pretending to be crazy from the death pawn records - the 'processed' drug dregs were all secret messages for the prince to secretly contact his old department.
