The Concubine Counterattacks and Conquers the Cold-Faced Prince

I was punished to kneel in the ancestral hall, and was accidentally bound to the "Anti-Abuse System". Every time I completed a revenge mission, I unlocked a modern skill. When I used my chemistry knowledge to slap the concubine in the face at the royal banquet, the system popped up a warning: The strongest villain was detected, and the host was advised to marry into the palace and attack him.