Let Me Be Your Brother-In-Law. I Am Invincible. What Do You Regret?

When he woke up, Li Chengfeng became a concubine of a prominent Qingzhou family. Due to the decline of the Lin family, Li Chengfeng was forced to fulfill his engagement to Lin Daiyu, the eldest daughter of the Lin family, in place of his brother. Rumor has it that Lin Daiyu was ugly and had an old illness. After being taken into a mysterious sect to practice as a child, her old illness relapsed and she was not going to die soon. So she returned to her family to marry Li Chengfeng to celebrate the occasion. Li Chengfeng never dreamed that such a happy engagement would activate the reward system... Moreover, the Lin family and Lin Daiyu seemed to be a little different from the "billion" people in the rumors...