《玄女经》云∶黄帝曰∶意贪交接而茎不起，可以强用不？玄女曰∶不可矣。夫欲交接
之道，男洼四至，乃可致女九气。黄帝曰∶何谓四至？玄女曰∶玉茎不怒，和气不至；怒而
不大，肌气不至；大而不坚，骨气不至；坚而不热，神气不至。故怒者精之明，大者精之关，
坚者精之户，热者精之门。四气至而节之以道，开机不妄开，精不泄矣。
《玄女经》云∶黄帝曰∶善矣！女之九气，何以知之？玄女曰∶伺其九气以知之。女人
大息而咽唾者，肺气来至；鸣而吮人者，心气来至；抱而持人者，脾气来至；阴门滑泽者，
肾气来至；殷勤咋人者，骨气来至；足拘人者，筋气来至。抚弄玉茎者，血气来至；持弄男
乳者，肉气来至。久与交接，弄其实以感其意，九气皆至。有不至者，则容伤。故不至可行
其数以治。（今检∶诸本无一气。）
《玄（素）女经》云∶黄帝曰∶所说九法，未闻其法，愿为陈之，以开其意，藏之石室，
行其法式。
玄女曰∶九法，第一曰龙翻。令女正偃卧向上，男伏其上，股隐于床，女举其阴以受玉
茎，刺其谷实，又攻其上，疏缓动摇，八浅二深，死往生返，热壮且强，女则烦悦，其乐如
倡，致自闭固，百病消亡。
第二曰虎步。令女俯俯，尻仰首伏，男跪其后，抱其腹，乃纳玉茎，刺其中极，务令深
密。进退相薄，行五八之数。其度自得，女阴闭张，精液外溢，毕而休息，百病不发，男益
盛。
第三曰猿搏。令女偃卧，男担其股，膝还过胸，尻背俱举，乃纳玉茎，刺其臭鼠，女烦
动摇，精液如雨，男深按之，极壮且怒，女快乃止，百病自愈。
第四曰蝉附。令女伏卧，直伸其躯，男伏其后，深纳玉茎，小举其尻，以扣其赤珠，行
六九之数，女烦精流，阴里动急，外为开舒，女快乃止，七伤自除。
第五曰龟腾。令女正卧，屈其两漆，男乃推之，其足至乳，深纳玉茎，刺婴女，深浅以
度，令中其实，女则感悦，躯自摇举，精液流溢，乃深极纳，女快乃止。行之勿失精，力百
倍。
第六曰凤翔。令女正卧，自举其脚，男跪其股间，两手授席，深纳玉茎，刺其昆石，坚
热内牵。令女动作，行三八之数，尻急相搏，女阴开舒，自吐精液，女快乃止，百病消。
第七曰兔吮毫。男正反卧，直伸脚，女跨其上，膝在外边，女背头向足，据席俯头，
乃纳玉茎，刺其琴弦，女快，精液流出如泉，欣喜和乐，动其神形，女快乃止，百病不生。
第八曰鱼接鳞。男正偃卧，女跨其上，两股向前，安徐纳之，微入便止，才授勿深，如
儿含乳，使女独摇，务令迟久，女快男退，治诸结聚。
第九曰鹤交颈。男正箕坐，女跨其股，手抱男颈，纳玉茎，刺麦齿，务中其实。男抱女
尻，助其摇举，女自感快，精液流溢，女快乃止，七伤自愈。
The *Xuan Nü Jing* (Classic of the Mysterious Woman) records: The Yellow Emperor (Huangdi) asked: "If one desires sexual intercourse but the penis does not become erect, can it be used forcibly?" Xuan Nü replied: "It cannot. For the proper way of engaging in intercourse, the man must achieve the 'Four Arrivals' (si zhi, 四至) before he can elicit the woman's 'Nine Qi' (jiu qi, 九气)." The Yellow Emperor asked: "What are the 'Four Arrivals'?" Xuan Nü said: "If the jade stem (penis) is not engorged (nu, 怒), the 'Harmony Qi' (he qi, 和气) has not arrived. If it is engorged but not large, the 'Muscle Qi' (ji qi, 肌气) has not arrived. If it is large but not hard, the 'Bone Qi' (gu qi, 骨气) has not arrived. If it is hard but not warm, the 'Spirit Qi' (shen qi, 神气) has not arrived. Therefore, engorgement is the manifestation of essence (jing, 精); largeness is the pass of essence; hardness is the door of essence; warmth is the gate of essence. When the four qi arrive and one regulates them according to the Dao (the Way), the 'opening mechanism' does not open recklessly, and essence is not discharged."
The *Xuan Nü Jing* records: The Yellow Emperor said: "Excellent! How can one know the woman's 'Nine Qi'?" Xuan Nü said: "Observe her nine qi states to know them. When a woman takes a deep breath (da xi, 大息) and swallows saliva, the 'Lung Qi' (fei qi, 肺气) has arrived. When she makes sounds (ming, 鸣) and sucks on the man, the 'Heart Qi' (xin qi, 心气) has arrived. When she embraces and holds the man tightly, the 'Spleen Qi' (pi qi, 脾气) has arrived. When the vaginal opening (yin men, 阴门) is slippery and moist, the 'Kidney Qi' (shen qi, 肾气) has arrived. When she diligently and gently bites (zha ren, 咋人) the man, the 'Bone Qi' (gu qi, 骨气) has arrived. When she hooks her feet around the man, the 'Sinew Qi' (jin qi, 筋气) has arrived. When she fondles and plays with the jade stem (penis), the 'Blood Qi' (xue qi, 血气) has arrived. When she grasps and plays with the man's nipples, the 'Flesh Qi' (rou qi, 肉气) has arrived. Through prolonged intercourse, stimulating her clitoris (shi, 实) to arouse her desire, all nine qi will arrive. If any qi does not arrive, it can lead to damage of the countenance. Therefore, if a qi has not arrived, one can apply its specific method ('number', shu, 数) to treat it. (Note: Current examination finds that all versions lack 'one qi'.)"
The *Xuan (Su) Nü Jing* records: The Yellow Emperor said: "Regarding the mentioned 'Nine Methods' (jiu fa, 九法), I have not heard their techniques. I wish you would describe them to enlighten my mind, so I may store them in a stone chamber and practice their methods."
Xuan Nü said: "The Nine Methods. The first is called 'Dragon Turns Over' (Long Fan, 龙翻). Have the woman lie supine facing upward. The man lies prone on top of her, his thighs hidden by the bed. The woman raises her yin region to receive the jade stem (penis). It thrusts into the depth of her vagina ('grain's core', gu shi, 谷实) and also attacks upward. Movements are loose, slow, and rocking: eight shallow and two deep thrusts, departing as if dead and returning as if alive. The penis becomes hot, strong, and hard. The woman becomes pleasurably agitated, her joy like singing, causing her vagina to close firmly. All diseases vanish.
The second is called 'Tiger Steps' (Hu Bu, 虎步). Have the woman lie prone, buttocks raised and head lowered. The man kneels behind her, holding her abdomen, then inserts the jade stem (penis), thrusting into her central extreme (zhong ji, 中极) area, ensuring deep and tight penetration. Advancing and retreating rub against each other, performing the count of five times eight (forty). The rhythm becomes natural. The woman's vagina closes and opens, fluids overflow outward. Upon completion, rest. All diseases do not arise; the man benefits and becomes more vigorous.
The third is called 'Gibbon Seizes' (Yuan Bo, 猿搏). Have the woman lie supine. The man lifts her thighs, bending her knees back past her chest, raising both buttocks and back. Then he inserts the jade stem (penis), thrusting into her vaginal opening ('smelly rat', chou shu, 臭鼠). The woman becomes agitated and moves. Fluids flow like rain. The man presses deeply, extremely strong and engorged. Stop when the woman reaches climax. All diseases heal spontaneously.
The fourth is called 'Cicada Clings' (Chan Fu, 蝉附). Have the woman lie prone, body straight. The man lies prone behind her, deeply inserting the jade stem (penis). He slightly raises her buttocks to knock against her 'red pearl' (clitoris, chi zhu, 赤珠), performing the count of six times nine (fifty-four). The woman becomes agitated, fluids flow, the inside of the vagina moves urgently, the outside becomes open and relaxed. Stop when the woman reaches climax. The seven impairments (qi shang, 七伤) are spontaneously removed.
The fifth is called 'Turtle Soars' (Gui Teng, 龟腾). Have the woman lie supine. She bends her two knees. The man pushes her feet up to her breasts. He deeply inserts the jade stem (penis), thrusting into the 'infant girl' (ying nü, 婴女, vaginal depth). Depth and shallowness follow measure, ensuring it hits her 'reality' (clitoris, shi, 实). The woman then feels pleasure, her body sways and lifts, fluids flow and overflow. Then insert deeply to the extreme. Stop when the woman reaches climax. Practice this without losing essence; strength increases a hundredfold.
The sixth is called 'Phoenix Soars' (Feng Xiang, 凤翔). Have the woman lie supine. She raises her own feet. The man kneels between her thighs, both hands supporting on the mat. He deeply inserts the jade stem (penis), thrusting against her 'kun stone' (kun shi, 昆石, posterior fornix), hard and hot, pulling inward. Have the woman move, performing the count of three times eight (twenty-four). Buttocks urgently clash. The woman's vagina opens and relaxes, spontaneously emitting fluids. Stop when the woman reaches climax. All diseases dissipate.
The seventh is called 'Rabbit Sucks the Fine Hair' (Tu Shun Hao, 兔吮毫). The man lies supine, legs straight. The woman straddles him, knees outside. The woman's back is toward his head, feet toward his feet. She supports herself on the mat, head lowered. Then she inserts the jade stem (penis), thrusting against her 'qin strings' (qin xian, 琴弦, shallow vaginal area). The woman climaxes, fluids flow out like a spring, joyful, harmonious, and happy, moving her spirit and body. Stop when the woman reaches climax. All diseases do not arise.
The eighth is called 'Fish Connects Scales' (Yu Jie Lin, 鱼接鳞). The man lies supine. The woman straddles him, both thighs forward. She inserts it calmly and slowly, entering slightly and then stopping, just making contact without deep penetration, like a child holding a nipple. Let the woman rock alone, ensuring it is slow and prolonged. The man withdraws when the woman climaxes. This treats all accumulations and gatherings (jie ju, 结聚).
The ninth is called 'Cranes Cross Necks' (He Jiao Jing, 鹤交颈). The man sits upright with legs apart ('ji sitting', ji zuo, 箕坐). The woman straddles his thighs, hands embracing the man's neck. She inserts the jade stem (penis), thrusting against the 'wheat teeth' (mai chi, 麦齿, vaginal opening), ensuring it hits her 'reality' (clitoris). The man holds the woman's buttocks, assisting her rocking and lifting. The woman feels pleasure spontaneously, fluids flow and overflow. Stop when the woman reaches climax. The seven impairments are spontaneously cured."