Why does Wu Zetian have so many Toy Boy?

Wu Zetian has many Toy Boy to satisfy her own desires.

The celebrities of Wu Zetian (Toy Boy) recorded in Old Tang Book include Xue Huaiyi, Zhang Yizhi, Zhang Changzong and Shen Nan. They are all handsome men with good figure who can satisfy Wu Zetian's desire.

Wu Zetian has a large number of Toy Boy. In order to strengthen their management, in 698 AD, Wu Zetian set up a crane control prison. At the beginning of 700 A.D., she changed Crane Control to Fengzhen House, which was managed by two brothers, Zhang Yizhi and Zhang Changzong, and became the "three palaces and six courtyards" of emperors in previous dynasties. The Zhang brothers, like the "queen" and "concubine" of the East Palace and the West Palace, became the general manager of the concubine of Wu Zetian.