The gentle illustrator Yu Huihui and the cold-blooded group president Song Jinrong entered into an emotionless business marriage because of their family. On the day they received the certificate, the two respected each other like "ice". Song Jinrong was indifferent throughout the whole process and made a contract of non-interference after the marriage. Everyone believed that Yu Huihui was just a transparent decoration in the marriage. Song Jinrong always cared about Bai Yueguang and Lin Weiwei in his heart. On their wedding night, Yu Huihui was accidentally bound to the [Post-Marriage Love Rules System], which allowed her to check Song Jinrong's favorability in real time, unlock her getting along skills and his hidden preferences, and easily avoid marital conflicts. She has a Buddhist background and manages her daily life carefully with a gentle and transparent attitude. She is not clingy, unpleasant, and measured. The caring companionship day after day slowly melted Song Jinrong's cold heart, turning him from feeling no alienation to being full of preference. After Bai Yueguang and Lin Weiwei returned to China, they were unwilling to let things end and repeatedly sow discord, stir up trouble and create conflicts. The sober and independent Yu Huihui calmly fought back and slapped her in the face with ease. Song Jinrong protected his wife throughout the whole process and completely cut off past obsessions. From contract binding to two-way redemption, from unfamiliarity and alienation to two-way love, they finally understood that the best love is always falling in love slowly after marriage.