In the ancient era of feudal autocratic monarchy, it was normal to have multiple wives and concubines. It was indeed very luxurious to keep one person together forever, especially for an emperor. But such an unlikely thing happened to Zhu Youtang, Xiaozong of the Ming Dynasty. He was a noble person, but he only had one queen in his life, and he respected the queen as a guest. This novel centers on Zhu Youtang and Zhang Fengqi, describing the ordinary but extraordinary love between them in the strict Forbidden City.