In order to help the prince's cousin Xiao Chen to relieve the disaster, Cheng Xiyuan donated 200,000 taels of silver in exchange for his promise to be the "only prince concubine". Unexpectedly, when he returned from his triumph, he teamed up with his father to take away all the titles of princess and crown princess that belonged to her and gave them to his cousin. After being wronged sincerely and being stabbed in the family's back, Cheng Xiyuan suddenly realized that she no longer wanted to be the legitimate daughter who swallowed her anger. She vacated the palace, kicked out the scumbag, helped her mother reconcile, and even bought the position of princess from the cold-faced Yan King Xiao Xuanyi with a salary of ten thousand taels. From then on, she held her business line in hand and worked step by step, vowing to make everyone who betrayed her regret their mistakes!