Analysis of information sources in references of the Wikipedia article "Taoism" in Romanian language version.
Almost all Taoist sex handbooks recommend that the "ding" should be a girl of 14 to 16, just before or after menarche. In Zhang Sanfeng's Instructions in Physiological Alchemy, "ding" were classified into three ranks. The lowest rank comprised women between the ages of 21 and 25. The middle rank compromised 16- to 20-year-old virgins after menarche. The highest rank comprised 14-year-old virgins before menarche.("The Role of Sexual Lore in Taoism" begins on page 50, this is a 2013 edition of a 1991 book)
The Taoist sexual books, such as the Hsuan wei Hshin (Mental Images of the Mysteries and Subtleties of Sexual Techniques') and San Feng Tan Cheueh (Zhang Sanfeng's Instructions in the Physiological Alchemy), written, respectively, by Zhao Liang Pi and Zhang San Feng, state that the most desirable ding is a girl about 14, 15, or 16 years old just before or after menarche. Zhang Sanfeng went further and divided ding into three ranks: the lowest rank, 21- to 25-year-old women; the middle rank, 16- to 20-year-old menstruating virgin girls; and the highest rank, 14-year-old pre-menarche virgin girls.
The Taoist sexual books, such as the Hsuan wei Hshin (Mental Images of the Mysteries and Subtleties of Sexual Techniques') and San Feng Tan Cheueh (Zhang Sanfeng's Instructions in the Physiological Alchemy), written, respectively, by Zhao Liang Pi and Zhang San Feng, state that the most desirable ding is a girl about 14, 15, or 16 years old just before or after menarche. Zhang Sanfeng went further and divided ding into three ranks: the lowest rank, 21- to 25-year-old women; the middle rank, 16- to 20-year-old menstruating virgin girls; and the highest rank, 14-year-old pre-menarche virgin girls.
Almost all Taoist sex handbooks recommend that the "ding" should be a girl of 14 to 16, just before or after menarche. In Zhang Sanfeng's Instructions in Physiological Alchemy, "ding" were classified into three ranks. The lowest rank comprised women between the ages of 21 and 25. The middle rank compromised 16- to 20-year-old virgins after menarche. The highest rank comprised 14-year-old virgins before menarche.("The Role of Sexual Lore in Taoism" begins on page 50, this is a 2013 edition of a 1991 book)