《洞玄子》云∶凡初交接之时，先坐而后卧，女左男右。卧定后，令女正面仰卧，展足
舒臂，男伏其上，跪于股内，即以玉茎坚拖于玉门之口，森森然若偃松之当邃谷洞前。更拖
碜勒，鸣口嗍舌，或上观（欢）玉面，下视金沟，抚拍肚乳之间，摩挲琼台之侧，于是男情
既或，女意当迷，即以阳锋纵横攻击，或下冲玉理，或上筑金沟，击刺于辟雍之旁，憩息于
琼台之右（以上外游，未内交也。）女当淫津，湛于丹穴，即以阳锋投入子宫，快泄其精，
津液同流，上灌于神田，下溉于幽谷，使往来KT 击，进退揩磨，女必求死求生，乞性乞
命。即以帛子干拭之，后乃以玉茎深投丹穴，至于阳台。
然若巨石之壅深溪，乃行九浅一深之法，于是纵柱横桃，旁牵侧拔，乍缓乍急，或深或
浅，经二十一息，候气出入，女得快意也。男即疾纵急刺，碜勒高抬，候女动摇，取其缓急，
即以阳锋攻其谷实，捉入于子宫，左右研磨，自不烦细细抽拔。女当津液流溢，男即须退，
不可死还，必须生返。如死出，大损于男，持宜慎之。
《素女经》云∶黄帝曰∶阴阳贵有法乎？素女曰∶临御女时，先令妇人放手安身，屈两
脚，男人其间，衔其口，吮其舌，拊搏其玉茎，击其门户东西两旁，如是食顷徐徐纳入，玉
茎肥大者纳寸半，弱小者入一寸，勿摇动之，徐出更入，除百病，勿令四旁泄出。玉茎入玉
门自然生热，且急妇人身当自动摇，上与男相得，然后深之。男女百病消灭。浅刺琴弦入三
寸半当闭口。刺之一二三四五六七八九回，深之至昆石旁往来，口当妇人口而吸气，行九九
之道讫，乃如此。
《洞玄子》说：凡是初次行房事的时候，先坐着然后躺下，女子在左男子在右。躺定之后，让女子正面仰卧，伸展双脚和手臂，男子伏在她身上，跪在她的两腿之间，随即用阴茎抵住阴道口，森然挺立如同倒下的松树面对深邃的山谷洞口一样。再用力摩擦，发出声音并吸吮舌头，或者向上观看（欢悦）女子的面容，向下注视金沟（女性生殖器），抚摸拍打腹部和乳房之间，揉搓琼台（指阴蒂或阴部隆起处）的侧面，于是男子情欲兴起，女子心意迷乱，随即用阳锋（阴茎）纵横攻击，或者向下冲击玉理（阴道内部纹理），或者向上撞击金沟，击刺在辟雍（指尿道口附近或阴道口周围）之旁，休息于琼台之右（以上描述为外部嬉戏，尚未进行体内交合）。女子应当流出淫津（爱液），浸润丹穴（子宫或阴道深处），随即用阳锋投入子宫，快速射精，津液一同流动，向上灌注于神田（胸部或心窝处），向下灌溉于幽谷（阴道深处），使得往来撞击，进退摩擦，女子必定求生求死，乞求性命。随即用帛巾干擦干净，然后再用阴茎深入丹穴，直达阳台（阴道深处或宫颈口）。
然而如果像巨石堵塞深溪一样阻滞，就施行“九浅一深”的方法，于是纵柱横桃（形容性交时的动作姿态），旁边牵引侧向拔动，时而缓慢时而急促，有时深有时浅，经过二十一次呼吸，观察气的出入，女子感到快意时。男子就快速放纵急刺，用力摩擦高抬，等待女子身体动摇，掌握其缓急节奏，随即用阳锋攻击谷实（阴道内敏感部位），将其纳入子宫，左右研磨，自然不需要繁琐地细细抽插。女子应当津液流溢，男子就必须退出，不可死守不出，必须活着返回。如果像死了一样射出（指早泄或无力），对男子大受损害，务必谨慎对待。
《素女经》说：黄帝问：阴阳交合有法则吗？素女答：临御女子时，先让妇人放手安身，弯曲双脚，男人在中间，含住她的嘴，吸吮她的舌头，抚摩搏弄她的阴茎，击打她门户（阴道口）东西两旁，像吃一顿饭的时间那样慢慢纳入，阴茎肥大者纳入一寸半，弱小者入一寸，不要摇动它，慢慢退出再进入，能除百病，不要让四周泄出精气。阴茎进入阴道自然产生热感，并且急切时妇人的身体应当自动摇摆，上与男子相得，然后深入。男女百病消灭。浅刺琴弦（比喻阴道壁）入三寸半应当闭口。刺入一二三四五六七八九次，深入至昆石（比喻坚硬之物或深处）旁往来，口应当对着女子的口而吸气，行完九九之道后，才如此做。
The *Dongxuanzi* states: When engaging in sexual intercourse for the first time, one should sit first and then lie down, with the woman on the left and the man on the right. After lying still, let the woman lie supine facing upward, extending her feet and arms. The man lies upon her, kneeling between her thighs, and presses his yang tip (penis) against the jade gate (vaginal opening), standing erect like a fallen pine tree before a deep valley cave. Further rubbing and tightening occurs, with sounds made from the mouth and tongue sucking or licking. One may look up to admire the woman's jade face or look down at the golden ditch (female genitalia), stroking and patting the area between the abdomen and breasts, and massaging the sides of the jade terrace (clitoris or vulvar mound). Thus, the man's passion arises, and the woman's mind becomes entranced. Then, using the yang tip to attack horizontally and vertically, thrusting downward into the jade texture (internal vaginal walls) or upward against the golden ditch, striking beside the biyong (area near the urethral/vaginal opening), and resting to the right of the jade terrace (above describes external play, not yet internal intercourse). The woman should produce abundant fluids, soaking the daniel cavity (deep uterus or vagina). Then insert the yang tip into the uterus, ejaculating quickly so that fluids flow together, irrigating upward to the shentian (chest or epigastrium) and downward to the yougu (deep vagina). Through rhythmic thrusting and friction, the woman may feel as if seeking life or death, begging for existence. Wipe dry with a silk cloth, then insert the penis deeply into the daniel cavity, reaching the yangtai (deep vagina or cervix).
If there is obstruction like a large stone blocking a deep stream, employ the method of "nine shallow and one deep" thrusts. Thus, positioning the pillar longitudinally or transversely, pulling sideways or extracting laterally, alternating between slow and fast, deep and shallow. After twenty-one breaths, observe the qi entering and exiting; when the woman feels pleasure, the man should thrust rapidly and vigorously, lifting high, waiting for the woman's body to move, adjusting to her rhythm. Attack the gu shi (sensitive internal areas) with the yang tip, guiding it into the uterus, grinding left and right, without needing tedious, fine withdrawal and insertion. When the woman's fluids overflow, the man must withdraw; do not remain stagnant ("die"), but return alive ("live"). If ejaculation occurs without vitality, it greatly harms the man; caution is essential.
The *Su Nv Jing* states: The Yellow Emperor asked: Is there a method for yin and yang union? Su Nu replied: When practicing intercourse with a woman, first let her release her hands and settle her body, bending both legs. The man positions himself between them, holding her mouth, sucking her tongue, stroking and manipulating his penis, striking the east and west sides of her gate (vaginal opening). After about the time it takes to eat a meal, slowly insert it. If the penis is large, insert one and a half cun; if small, insert one cun. Do not shake it. Withdraw slowly and reinsert; this can eliminate hundred diseases. Do not allow leakage from the four sides. When the penis enters the vagina, heat naturally arises. Urgently, the woman's body should sway automatically, harmonizing with the man, after which deeper penetration is appropriate. Hundred diseases of both man and woman are eliminated. Shallowly penetrating the qin xian (metaphor for vaginal wall) to three and a half cun requires keeping the mouth closed. Perform thrusting one, two, three... up to nine times. Penetrate deeply to the side of kunshi (metaphor for hard tissue or depth), moving back and forth. Breathe in through the mouth while facing the woman's mouth. Complete the dao of ninety-nine cycles, then proceed thus.