Old Marriage Contract at 18

An old contract from a Jiangnan aristocratic family binds an 18-year-old rebellious girl to 28-year-old cold and aloof ancient architecture expert Lu Ze'an. He appears cold but is gentle inside, restrained and insightful, yet he lets down all his defenses only for her. From a marriage contract in the past to a mutual pursuit after adulthood, this fated encounter ultimately makes him give his utmost affection to her alone.