The so-called bedroom is to wait on the emperor to sleep. This is the only way for concubines to please the emperor. Because there were too many concubines, many strange things happened to the emperor in order to decide who to sleep with and to please his concubines. Dice is a gambling tool, which was called "matchmaker" by the court during the Kaiyuan period of the Tang Dynasty. It turned out that the emperor was impatient and too lazy to choose a concubine to sleep, so he let the concubine roll the dice to decide who to sleep with.

Li Longji's "Butterfly Luck" method is similar. Ming Chengzu asked his queens to fill their heads with flowers, and then set the butterflies they caught free. Whoever stops on the head of this butterfly will get the lucky night of the Ming emperor. In addition, there is a method of "gambling and sleeping", which allows concubines to invest money on concubines; The method of "fireflies make money" allows concubines to catch fireflies in order to get fireflies first; One way of "lucky luck" is to shoot sachets at concubines to make the winners lucky.

Most concubines can only take a resigned attitude towards the bedroom. However, there are also many women in the palace who have a positive attitude towards sleeping and strive for sleeping in various ways to gain the favor of the emperor.