You are the one I care for, not your gender!

The Prince of Commander of the North has a crush on the daughter of the Shen family, and wants to take their daughter as a concubine. In order to give his adoptive mother a better life in her old age, the mute, male servant Shen Yu conceals his gender and takes the place of the daughter to be sent to Prince of Commander of the North, Jun Xuanxiao. Shen Yu is afraid that once his identity is found he will lose his life, but to his surprise, he attracts the attention of Jun Xuanxiao...