Sexual intercourse techniques: piston position, rotational position, thrusting motion, and methods to promote orgasm.

Sexual intercourse techniques: mainly include sexual intercourse techniques, techniques to promote orgasm, and sexual techniques related to ancient Chinese sexual arts.

There are three basic techniques for sexual intercourse: ① Piston-like movement: This involves the penis thrusting back and forth in the vagina. Women generally find low-frequency thrusting more interesting, as it stimulates arousal, while high-speed thrusting easily leads both partners to orgasm. The *Yu Fang Mi Jue* (Jade Chamber Secrets) from the Sui and Tang dynasties in China succinctly outlines sexual techniques, summarizing them in four sentences totaling 16 characters: "Nine shallow thrusts, one deep thrust, three to the left, three to the right, leeches on land, eels stranded." This essentially describes piston-like movement, vividly illustrating it. It means thrusting back and forth, first nine times shallowly, then one deep thrust, then three thrusts on each side of the vaginal wall, followed by rhythmic up-and-down thrusting like a leech wriggling forward in waves, and then rhythmic swaying left and right like an eel wriggling forward in a spiral in shallow water. This action can bring immense pleasure to both partners during sexual intercourse. ② Rotational movement: After the penis is inserted into the vagina, a circular motion with the waist is used to perform a rotational movement. This method is suitable for the woman-on-top position and can be performed by both partners alternately. The advantage of this method is that the two partners are close together, which helps to strongly stimulate the clitoris at the base of the penis, allowing both partners to experience intense sexual pleasure simultaneously. ③ Receiving and Receiving Movement: After the man inserts his penis into the woman's vagina, the supine partner pushes their pelvis and genitals upwards. The prone partner presses their pelvis and genitals downwards, creating an upward and downward receiving/pressing motion, making the point of contact between the partners very close. This method is suitable for either the man-on-top or woman-on-top position. The advantage is that it helps to stimulate the clitoris and vaginal opening, and it also helps the woman to grip the penis tightly within one-third of the vaginal opening, thereby increasing the intensity of sexual stimulation.

Techniques to Promote Orgasm: Orgasm is the peak of sexual excitement for both partners, a high-level experience of sexual communication, and a state of transcendence. Therefore, both partners desire to achieve orgasm during sex. How can one enjoy the "sexual" bliss of orgasm? The methods are: ① Practice muscle training. This involves strengthening the contraction of the female pubococcygeus muscle (also known as the PC muscle). The method is to contract and then relax the vaginal and anal sphincter muscles, counting as one repetition. Do this 60 times each morning and evening for a month, then apply this movement during sexual intercourse. This can strengthen the vagina's grip on the penis, enhancing pleasure. ② Change sexual positions appropriately. If a sexologist has identified a G-spot on the anterior vaginal wall, the woman-on-top position is recommended. This allows for more effective stimulation of the G-spot, promoting earlier female orgasm and coordinating sexual pleasure for both partners. ③ Learn to combine sexual fantasies with physical sexual stimulation. ④ Emphasize foreplay. ⑤ Strengthen sensual communication between partners. ⑥ Make full use of erogenous zones and emphasize the active participation of both partners in sexual activities.

Ancient Chinese sexual techniques, particularly those related to the art of intercourse, provide a comprehensive overview of the art and methods of sexual intercourse. These techniques include "Ten Movements," "Ten Sections," "Ten Cultivations," "Eight Movements," and "Ten Finishing Steps." The "Ten Movements" refer to the number of times the penis thrusts during intercourse, each movement having its own health benefits. The "Ten Sections" imitate the postures of ten animals during intercourse, representing the application of biomimicry in sexual life. The "Ten Cultivations" refer to the direction, speed, frequency, and depth of penile thrusting during intercourse. The "Eight Movements" refer to the changes in posture during intercourse and their psychological impact. The "Ten Finishing Steps" describe the characteristics of each round of intercourse, and also discuss female pleasure responses and the concept of male-female complementarity.

Post-orgasm techniques: After orgasm, during the resolution phase, relaxation activities should be undertaken. If the wife is still affectionate during the resolution phase after the husband's sexual satisfaction, the husband should continue to show tenderness and love to his wife, which can plant a lovely "seed" for the next sexual encounter. This should generally last for more than ten minutes.

Hu Tingyi's evaluation of ancient Chinese sexual techniques: Ancient Chinese sexual techniques have a long history, rich content, and insightful discussions, playing a significant role in promoting procreation and improving the quality of marital life throughout Chinese history. Its characteristics include: ① A systematic and comprehensive summary of historical sexual techniques. For example, the main body of the *Dongxuanzi* focuses on exploring and describing various technical details throughout the entire process of intercourse, detailing foreplay, positions, and specific movements during intercourse, proposing "thirty methods," "nine methods," and "six postures" of intercourse, emphasizing the rich and diverse characteristics of the art of sexual intercourse. The *Dongxuanzi* also absorbed and inherited much from its predecessors, such as the "ten sections," "ten cultivations," and "eight movements" in *Heyinyang*, the "ten postures" and "eight paths" in *Tianxia Zhidao Tan*, and the "nine methods" in *Su Nu Jing*, many of which are experiences observed, experienced, and accumulated by authors of bamboo slips or ancient books. ② Many of the arguments align with modern scientific principles: For example, the *He Yin Yang* divides the sexual intercourse process into the foreplay stage, the intercourse stage, and the final stage, which coincides with the staged sexual intercourse in modern sexology. Dong Xuanzi's method of controlling ejaculation emphasizes waiting until the woman reaches orgasm before ejaculating, which conforms to the theory of synchronized male and female orgasms and aligns with modern sexual medicine views. ③ It emphasizes health preservation: For instance, the *Ten Questions* discusses the combination of sexual intercourse and Qigong, emphasizing absorbing the essence of heaven and swallowing saliva, guiding Qi to circulate through the five internal organs, deeply storing essence and Qi within the body, achieving internal preservation of spirit and Qi, replenishing organ Qi, resulting in a healthy body and longevity. It proposes that in addition to reproduction and sexual pleasure, sexual life should also focus on health preservation.

However, due to the limitations of historical conditions, certain outdated ideas still exist in ancient texts, requiring further study and improvement. These include: ① Some statements are exaggerated and lack scientific rigor. For example, in the "Seven Losses and Eight Benefits," sexual intercourse is mentioned as "one benefit is called 'strengthening essence.' Both men and women should lie on their sides and have intercourse twice a day. This can strengthen essence and cure menstrual leakage in women. Intercourse twice a day will cure it in fifteen days." The *Jade Chamber Secrets* discusses amenorrhea and stopping ejaculation, suggesting that when ejaculation is imminent, pressing the area between the scrotum and anus with fingers can cause semen to flow back from the penis into the brain, thus "returning essence to nourish the brain." These views contain both anatomical and theoretical errors. ② Some texts contain feudal superstition. For example, *Women's Prescriptions* mentions that to transform a woman into a man, placing an axe and rooster feathers under the bed during sexual intercourse will achieve this, which falls into feudal superstition and witchcraft. ③ Some texts promote sexual promiscuity.

Hu Tingyi's evaluation of foreign sexual art: Among the representative works on sexual techniques abroad, the Indian Kama Sutra and the Roman Art of Love are worth mentioning. The Kama Sutra is very similar to the Chinese Taoist Jade Chamber Secrets, which distinguishes various sexual techniques from a clinical and detached perspective (but without the poetic flair of the Chinese version); it is also similar to Ovid's Art of Love, which uses a satirical attitude to glorify the art of flirting. Some believe that India, located between China and Rome, has integrated the influences of both countries in its sexual practices. If the Chinese Taoist Jade Chamber Secrets mainly focuses on "what happens in bed," then the Roman Art of Love teaches you "how to get to bed," while the Indian Kama Sutra seems to have a broader perspective. The Kama Sutra emphasizes the psychological aspect over the physical aspect in many of its descriptions; therefore, it contains content on both "sex" and "love." While Chinese sexual techniques list 30 sexual positions, the Kama Sutra lists far more, many bordering on "stunt performances." Its weakness lies in separating "love" from "sex," suggesting that true love should be "guided by instinct" without any instruction; it also devotes considerable space to instructing on loveless sexual techniques. Overall, despite these shortcomings, both books still possess certain sexological value.