The secret love that lasted for more than ten years was exchanged for his wedding invitation. Time traveled to the harem of Kangxi, the first emperor of the Qing Dynasty. What should we do in the face of the 'Three Thousand Beauties' who eclipse the flowers and the emperor Mu Qingran, who is known to be cold and ruthless? In the previous life, the monogamy system lasted for more than ten years but failed to exchange for true love. Even Qing Ran, who lives in the 21st century, would not have thought that in this era of "monogamy", she could win the favor of the emperor!