天地 ，万物化醇，男女构精，万物化生，此造化自然之理也。亦无思无为之道
也。故有人道，即有夫妇。有夫妇，即有子嗣。又何有乏嗣之说？然天有不生之时，地
有不毛之域，则人不能无乏嗣之流矣。然则生者自生，乏者当乏，而求嗣之说，又何为
也？果可求耶？果不可求耶？则其中亦自有说，亦自有法矣。所谓说者，非为不生不毛
者而说也，亦非为少壮强盛者而说也。盖不生不毛者，出于先天之禀赋，非可以人力为
也。少壮强盛者，出于妙合之自然，不必识，不必知也。惟是能子弗子者，无后难堪，本
非天付。衰老无儿者，精力日去，岂比少年？此所以有挽回之人力则有说而有法矣。虽法
之垂诸古者已不为少，然以余觉之，则若有未尽其妙蕴者焉。因而胪列其法，曰天时，曰
地利，曰人事，曰药食，曰疾病。但犯其一，便足败乃公事矣。宾于晚年得子，率鉴乎此。
凡苦于是者，惟察之信之。则嗣续之猷，或非渺小，故命之曰《宜麟策》。
凡交会下种之时，古云宜择吉日良时，天德月德，及干支旺相，当避丙丁之说，顾以
仓猝之顷，亦安得择而后行，似属迂远不足凭也。然惟天日晴明，光风霁月，时和气爽，
及情思清宁，精神闲裕之况，则随行随止，不待择而人人可辨，于斯得子，非惟少疾，而
必且聪慧贤明。胎元禀赋，实基于此。至有不知避忌者，犯天地之晦冥大雾，则受愚蠢
迷蒙之气，犯日月星辰之薄蚀，则受残缺刑克之气，犯雷霆风雨之惨暴，则受狠怒惊狂
之气，犯不阴不阳倏热倏寒之变幻，则受奸险诡诈之气，故气盈则盈，乘之则多寿，气
缩则缩，犯之则多夭。顾人生六合之内，凡生长壮老已，何非受气于生成？而知愚贤不
肖，又孰非禀质于天地？此感兆元始之大本，苟思造命而赞化育，则当以此为首务。
天地之间，万物在阴阳交感中化育醇厚；男女精气结合，万物由此诞生，这是造化自然运行的规律。这也体现了“无思无为”的大道。因此，有人类存在，就有夫妇关系；有夫妇关系，就有子嗣传承。哪里会有没有后代的说法呢？然而，天有不生养万物的时节，地有不生长草木的区域，那么人也不能完全没有缺乏子嗣的情况。既然如此，能生育的自然生育，不能生育的自然缺乏，那么寻求子嗣的说法，又是为了什么呢？果真可以求得吗？果真不可求吗？这其中自有道理，也自有方法。所谓的方法，并不是针对那些先天无法生育或土地贫瘠不毛的人所说的，也不是针对那些年轻力壮、精力充沛的人所说的。因为先天禀赋不足导致的不生育，不是人力所能改变的；年轻力壮者的生育，出于阴阳妙合的自然规律，不需要刻意去认识或知晓。只有那些能够生子却未能生子的人，因无后而感到难以忍受，这并非上天注定；年老体衰而没有儿子的人，精力日渐衰退，怎能与少年相比？这就是为什么通过人力可以挽回局面，因而有了相应的论述和方法。虽然流传于古人的方法已经不少，但依我个人的体会，似乎还有未尽其精妙之处。因此，我将这些方法列举出来，分为天时、地利、人事、药食、疾病五个方面。只要触犯其中任何一项，就足以败坏大事。我的宾客在晚年得子，都是借鉴于此。凡是深受此苦的人，只要仔细考察并相信它，那么延续后代的计划，或许并非微不足道，所以将此书命名为《宜麟策》（意为适宜孕育麒麟般的后代）。
凡是在行房受孕的时候，古人说应当选择吉日良辰，如天德月德日，以及干支旺相之时，应当避开丙丁日等说法，但在仓促之间，又怎么能先选择再行动呢？这似乎显得迂腐遥远而不足以信赖。然而，只有在天气晴朗明亮，和风细雨，气候和暖清爽，以及心情清静安宁，精神悠闲充裕的情况下，无论何时行房，人们都可以自行辨别。在这种状态下受孕得到的孩子，不仅少病，而且必定聪慧贤明。胎儿的元气禀赋，实际上就是基于这种情况。至于那些不知道避开禁忌的人，如果遇到天地昏暗大雾的天气，就会受到愚蠢迷蒙之气的感染；如果遇到日月星辰蚀亏的现象，就会受到残缺刑克之气的感染；如果遇到雷霆风雨的惨烈暴虐，就会受到狠毒愤怒惊恐狂乱之气的感染；如果遇到忽冷忽热、不阴不阳的变幻天气，就会受到奸险诡诈之气的感染。所以，当天地之气充盈时，顺应它则多长寿；当天地之气缩敛时，触犯它则多夭折。况且人生在世，从生长到壮盛再到衰老死亡，哪一步不是接受天地生成的气？而聪明愚笨、贤良不肖，又有谁不是禀受于天地的本质？这是感应兆示元始的根本大道，如果想要改造命运并辅助天地化育万物，就应当把这一点作为首要任务。
Between Heaven and Earth, all things are nurtured through the interaction of Yin and Yang; when male and female essences combine, all things are born. This is the natural law of creation. It also embodies the Dao of "non-thought and non-action." Therefore, where there are humans, there are husbands and wives; where there are husbands and wives, there are offspring. How can there be a notion of lacking heirs? However, there are times when Heaven does not generate, and regions where Earth does not produce vegetation; thus, humans cannot be without those who lack heirs. If so, those who can bear children do so naturally, and those who cannot lack them naturally. Then, what is the purpose of seeking heirs? Can they truly be sought? Can they truly not be sought? There are reasons and methods within this. The so-called methods are not for those who cannot conceive due to innate endowment, nor for those who are young, strong, and vigorous. For those who cannot conceive due to innate endowment, it is beyond human power to change. For the young and vigorous, conception occurs through the natural harmony of Yin and Yang, requiring no conscious effort or knowledge. It is only for those who are capable of having children but fail to do so, finding the lack of descendants unbearable, which is not destined by Heaven; and for the elderly who have no sons, whose vitality declines daily, how can they compare to youth? This is why human effort can intervene, leading to discussions and methods. Although methods passed down from antiquity are numerous, in my opinion, their profound essence has not been fully explored. Therefore, I list these methods under five categories: Heavenly Timing (Tian Shi), Geographical Advantage (Di Li), Human Affairs (Ren Shi), Medicine and Diet (Yao Shi), and Diseases (Ji Bing). Violating any one of these is sufficient to ruin the endeavor. My guest had a son in his late years, relying on these principles. Those suffering from this issue should examine and trust these words. Thus, plans for continuing the lineage may not be trivial, hence the title *Yilin Ce* (Strategy for Suitable Offspring).
Regarding the timing of intercourse for conception, ancient texts suggest choosing auspicious days and hours, such as those blessed by Tian De and Yue De virtues, or when the Heavenly Stems and Earthly Branches are prosperous, while avoiding days associated with Bing and Ding (Fire elements). However, in moments of haste, how can one select beforehand? Such advice seems pedantic and impractical. Nevertheless, when the weather is clear and bright, the wind is gentle, the climate is harmonious and refreshing, and the mind is tranquil and the spirit relaxed, one can discern suitable conditions spontaneously. Conception under such circumstances yields children who are not only healthy but also intelligent and virtuous. The fetal Yuan Qi (Primordial Energy) and constitution are fundamentally established here. Conversely, those who ignore taboos and encounter dark, foggy weather receive qi of stupidity and confusion; witnessing solar or lunar eclipses exposes them to qi of deficiency and conflict; experiencing violent thunderstorms subjects them to qi of ferocity, anger, and terror; encountering erratic temperature changes (neither Yin nor Yang) infects them with qi of deceit and treachery. Thus, when cosmic Qi is abundant, aligning with it brings longevity; when Qi is contracting, violating it leads to premature death. Furthermore, throughout life—from growth to maturity, old age, and death—every stage involves receiving Qi from Creation. Whether wise or foolish, virtuous or unworthy, all inherit their nature from Heaven and Earth. This is the fundamental principle of sensing the origin. To reshape destiny and assist in the creative process of Heaven and Earth, one must prioritize this understanding.