According to Professor Li Feng-mao of the Chinese department at National Chengchi University, the rise of fangzhongshu had much to do with the emperors, for it was an art by which "kings and emperors tried to assure their posterity."
政治大學中文系教授李豐楙表示，房中術的興起與帝王有關，是一種「帝王廣世之術」。