崔紫虚曰∶阴搏于下，阳别于上，血气和调，有子之象。手之少阴，其脉动甚，尺按不绝，此为有孕。少阴
属心，心主血脉。肾为胞门，脉应于尺。或寸脉微，关滑尺数，往来流利，如雀之啄。或诊三部，浮沉一止，或
平而虚。当问月水，妇人有病而无邪脉，此孕非病，所以不月。
慎斋按∶以上六条，序妇人胎孕之脉也。《内经·平人气象论》云∶妇人手少阴脉动甚者，妊子。又《阴
阳别论》云∶阴搏阳别，谓之有子。此二语原兼心与肾二经并论也。手少阴主心，心生血，妇人以血养胎，故血旺
则易孕。始受胎时，精与血凝聚不散，故心脉厥厥而动也。阴搏者，太仆注，尺中也。尺脉搏手，搏即动甚之义。足少
阴属肾，肾主精，女子以系胞，而子宫在焉。精射胞门，则子宫之气，裹血 ，故应手而搏击于阳脉之上。
《内经》原两明其义，自全元起改手少阴为足少阴，后人遂有议太仆注手少阴之误。有从全本不从王本之说，岂
知王注阴搏之阴谓尺中，则知心与肾原兼诊之，而妊孕可推也。予初读《内经》，颇惑此句为难解，必经文两
句合看始明。今得仲甫、硕甫二论，更了如也，因附辨之。
王叔和曰∶妇人妊娠四月，欲知男女法，左疾为男，右疾为女，俱疾为生二子。又曰∶左脉尺内偏大为男，右
尺内偏大为女，左右俱大产二子。大者，如实状也。即阴搏阳别之义。尺脉实大，与寸脉殊别，但分男左女
右也。又曰∶左脉沉实为男，右脉浮大为女。
崔紫虚说：阴脉搏动于下部，阳脉与之有别，气血调和，这是怀孕的征象。手少阴心经的脉搏动明显，尺部按之不绝，这是有孕的表现。手少阴属心，心主血脉。肾为胞宫之门，脉象应于尺部。或者寸脉微弱，关脉滑利，尺脉数急，脉气往来流利，像麻雀啄食一样。或者诊察寸、关、尺三部，浮取沉取时脉律出现间歇，或者脉象平和而虚弱。应当询问月经情况，妇人虽有停经现象但无病邪脉象，这是怀孕而非疾病，所以月经停止来潮。
慎斋按语：以上六条，叙述了妇人胎孕的脉象。《内经·平人气象论》说：妇人手少阴脉动甚的，是怀孕了。又《阴阳别论》说：阴脉搏动而区别于阳脉，叫做有子。这两句话原本兼论心和肾两经。手少阴主心，心生血，妇人用血来养胎，所以血旺则容易受孕。刚开始受孕时，精与血凝聚不散，所以心脉厥然而动。所谓“阴搏”，太仆（王冰）注解说是在尺中。尺脉搏击手指，搏就是动甚的意思。足少阴属肾，肾主精，女子靠肾来系胞，子宫就在这里。精气射入胞门，则子宫之气裹住血液，所以应手搏击于阳脉之上。《内经》原本明确阐述了这两个含义，自从全元起将手少阴改为足少阴后，后人于是议论太仆（王冰）注解手少阴是错误的。有主张遵循全本而不从王冰本的说法，哪里知道王冰注解说“阴搏”的阴是指尺中，那么就知道心和肾原本是兼诊的，从而可以推断出妊娠的情况。我初读《内经》，很困惑这句话难以理解，必须将经文的两句话合起来看才明白。现在得到仲甫、硕甫两人的论述，更加清楚了，因此附上辨析。
王叔和说：妇人妊娠四个月，想知道男女的方法，左脉疾速的是男胎，右脉疾速的是女胎，左右都疾速的是怀双胞胎。又说：左脉尺内偏大的是男胎，右尺内偏大的是女胎，左右都大的是生双胞胎。所谓的“大”，就像实证的样子。这就是“阴搏阳别”的含义。尺脉实大，与寸脉不同，只是区分男左女右罢了。又说：左脉沉实的是男胎，右脉浮大的是女胎。
Cui Zixu said: When the Yin pulse beats at the lower position and is distinct from the Yang pulse, with harmonious Qi and Blood, it is a sign of pregnancy. If the pulse of the Hand-Shaoyin (Heart Meridian) moves vigorously, and the Chi (cun-kou) position remains unceasing upon pressure, this indicates pregnancy. The Hand-Shaoyin belongs to the Heart, which governs the vessels and blood. The Kidney serves as the gate of the Bao Palace (uterus), and the pulse corresponds to the Chi position. Alternatively, the Cun (inch) pulse may be faint, the Guan (bar) pulse slippery, and the Chi pulse rapid, with the pulse flow smooth and fluid, resembling the pecking of a sparrow. Or, when examining the three positions (Cun, Guan, Chi), there may be an intermittent stop between floating and sinking palpations, or the pulse may appear level yet deficient. One should inquire about menstruation; if a woman has amenorrhea but lacks pathological pulses, this is pregnancy rather than disease, hence the cessation of menses.
Shen Zhai commented: The above six items describe the pulses associated with pregnancy in women. *Neijing · Pingren Qixiang Lun* states: "When the Hand-Shaoyin pulse of a woman beats vigorously, she is pregnant." Also, *Yinyang Bie Lun* states: "When the Yin pulse beats distinctly apart from the Yang, it is called having a child." These two statements originally discuss both the Heart and Kidney meridians together. The Hand-Shaoyin governs the Heart, which generates Blood; women use Blood to nourish the fetus, so abundant Blood facilitates conception. At the initial stage of conception, Essence and Blood condense and do not disperse, causing the Heart pulse to beat vigorously. "Yin beating" refers to the Chi position, as noted by Taipu (Wang Bing). A Chi pulse that strikes the fingers indicates vigorous movement. The Foot-Shaoyin belongs to the Kidney, which governs Essence; women rely on the Kidney to anchor the Bao Palace, where the uterus resides. When Essence enters the Bao Gate, the Qi of the uterus envelops the Blood, resulting in a pulsating sensation against the Yang pulse. *Neijing* originally clarified these meanings clearly. Since Quan Yuanqi changed "Hand-Shaoyin" to "Foot-Shaoyin," later scholars debated whether Wang Bing's commentary on Hand-Shaoyin was erroneous. Some advocated following the original text over Wang's version. However, Wang Bing’s note that "Yin" in "Yin beating" refers to the Chi position implies that both Heart and Kidney are examined simultaneously, allowing one to deduce pregnancy. Initially, I found this passage difficult to understand, realizing only after reading the two sentences of the classic together. With the arguments provided by Zhongfu and Shuofu, it became clear, so I append this clarification here.
Wang Shuhe said: To determine the sex of a fetus at four months of pregnancy: if the Left pulse is rapid, it is a male; if the Right pulse is rapid, it is a female; if both are rapid, twins are expected. He also stated: If the inner part of the Left Chi pulse is predominantly large, it is a male; if the inner part of the Right Chi pulse is predominantly large, it is a female; if both sides are large, twins will be born. "Large" here resembles the appearance of an Excess pattern. This aligns with the meaning of "Yin beating distinct from Yang." The Chi pulse is solid and large, differing from the Cun pulse, distinguishing males on the left and females on the right. He further stated: A deep and solid Left pulse indicates a male; a floating and large Right pulse indicates a female.