The Sutra of Plain Woman is the most important sexological work in ancient China. It was also circulated before the Tang Dynasty, including Sutra of Plain Woman, Mystery of Jade House, Description of Jade House, Zi Xuan Cave and so on. Unfortunately, it was lost after the Five Dynasties and the Song Dynasty!

Extension: The wonderful books about sexual health in ancient China include Harmony of Yin and Yang, Ten Questions, The Best Way in the World, Prescriptions for Health Preservation, Miscellaneous Treatments, Huangdi Neijing, Lunheng Qishou Tablet and so on.

On the Balance of Rongcheng Vagina (Lost), Qi Fa, Huang Ting Jing, Su Nv Jing, Motome Miao Lun, Yu Fu Mi Ji, Xuan Nv Jing, Motome, Bao Puzi, Yin and Yang of Heaven and Earth, Dong and Yu Nv Profit and Loss.