Xiao Chengyu, the crown prince of Zhenbei, and Lin Qinghuan, the legitimate daughter of the Minister of Rites, were originally childhood sweethearts who were "ordained by their parents" to get married. Tang, Mrs. Li wanted her grandson to marry the gentle and tough Lin Qinghuan), coupled with the sudden chaos on the wedding day, it eventually evolved into - Su Tangtang was mistakenly carried into the Zhenbei Prince's sedan chair, and Lin Qinghuan was mistakenly sent into the bridal chamber of Dingbei Houfu.
After two misplaced wedding ceremonies, the four gradually uncovered the truth in "Marriage First, Love Later"
