Because of polygamy in ancient times, it is not surprising that many women marry the same man. Even it is common for two sisters to marry the same man. Especially those rich and powerful princes and nobles are generally attracted by the daughters of beautiful families. Under the influence of this good gene, if both sisters are beautiful, it is also common to marry the same man naturally. This kind of thing not only exists among princes and nobles, but even the emperor will have two sisters as concubines at the same time.

First, Emperor Liu Qi of Han Jing married two younger sisters, Wang Yi. Wang Miao's mother Zanger found someone to calculate a divination, saying that her two daughters were both distinguished guests, so although Wang Miao got married, she was taken home by Zanger, and later Wang Miao and Wang Xun were sent to the Prince's Mansion by Zanger. Because they are beautiful, young and beautiful, and they are very popular with Han, Zanger is also named. Wang Wei and Wang Xun can also take care of each other in the palace.

Second, Zhao and Zhao Hede married Han Chengdi at the same time. After Zhao Yanfei married Emperor Han Chengdi, he was very loved by Emperor Han Chengdi and became his queen. But she soon fell out of favor because of her age, so she took her sister Zhao Hede into the palace, only to find that Emperor Han Chengdi was addicted to the beauty of Zhao Hede. The queen's position has not changed, but Zhao Yanfei and Zhao Hede married Emperor Han Chengdi at the same time to consolidate their position.

Third, Emperor Xian of Han Dynasty married three daughters of Cao Cao. Emperor Xian of Han did not decide to marry Cao Cao's daughter by his own subjective will. Cao Cao relied on the emperor to be a vassal. In order to control every move of Emperor Xian of Han Dynasty, he married all his three daughters to Emperor Xian of Han Dynasty, which not only consolidated his position, but also enabled his daughters to enjoy endless splendor. He also gained the noble status of royalty, which provided convenience for him to master power. This is why Cao Cao built this building.