The reason why human beings can survive lies in Qi (Vital Energy) and Blood. The reason why Blood is generated lies in Qi. Qi belongs to Fire; Blood belongs to Water. It is like storing water in a pot and placing fire underneath to cook it; the steaming, floating vapor that rises is Water. However, the cause of this phenomenon is not Water itself, but Qi, which is the function of Fire. Therefore, treating Blood disorders requires first regulating Qi. When Qi moves, Blood moves; when Qi stagnates, Blood stagnates. Movement leads to life, while stagnation leads to death. Seeing Blood stagnation and attacking it forcibly to make it descend is akin to seeing stagnant water and forcing it to flow by agitation. Today, practitioners of obstetrics employ this method to kill people, an occurrence whose frequency is incalculable. In the Guiyou year of the Jiaqing reign, my wife, Lady Wei, suffered from postpartum blood stasis. The physician stated: "This condition cannot be cured without expelling the stasis using Euphorbiae Lathyris Radix (Ezhu) and Bupleuri Radix (Sanleng)." After one dose, the patient became comatose and delirious. The physician then claimed: "The medication was too mild to overcome the disease," and increased the dosage significantly. Consequently, Qi rebelled upwards, leading to sudden collapse. At that time, I had just begun to study medicine and believed the condition was indeed incurable, feeling only grief and sorrow. Later, I gradually studied the teachings of Qi and Huang (Traditional Chinese Medicine) and obtained the book *Chanbao* (Precious Prescriptions for Obstetrics) authored by Ni of Pujiang. Upon encountering relatives or acquaintances suffering from similar conditions, I followed the prescriptions in this book, adding Sheng Di Huang (Rehmanniae Radix Preparata) in amounts of approximately two liang to Shenghua Tang (Postpartum Invigorating Decoction), often achieving complete recovery. For other syndromes, treatment according to the formulas resulted in universal cure. Only then did I realize that previous treatments by physicians were erroneous. Substances such as Ezhu and Sanleng break Blood but consequently damage Qi. When Qi is damaged, Blood cannot be regenerated; even miraculous remedies become useless. In contrast, Shenghua Tang regulates Qi while promoting Blood circulation. By adding Sheng Di Huang, Qi becomes robust, thereby facilitating the movement and generation of Blood, which explains its efficacy. Mourning the irretrievable loss of the deceased and pitying the ignorance of mediocre physicians, I recently served as the acting magistrate of Pingdu. During intervals between judicial duties, I selected this book, made slight revisions and refinements, and arranged for its printing and distribution. This aims to provide obstetricians with a reliable reference, preventing them from killing patients with drugs that break Blood and damage Qi. Alas! Is this phenomenon limited only to postpartum conditions? Gao Gufeng of Siming discussed the treatment of Blood disorders, advocating the use of Gu Yuan Tang (Solidify Origin Decoction) to first restore Qi, heavily utilizing Ginseng Radix et Rhizoma (Renshen) and Astragali Radix (Huangqi). However, crude practitioners of today only know how to use Cold-Cooling herbs, directly suppressing and severely obstructing the Yang Qi of the Heart and Lung. This gradually leads to the extinction of the vital generating Qi, making rescue impossible. Is this not tragic? I write this preface to warn those in the world who treat Blood disorders without understanding the importance of regulating Qi. Mr. Ni's name was Zhiwei, courtesy name Peiyu, pseudonym Fengbin. He completed this book in the sixth year of the Yongzheng reign. Previously, no printed edition existed. My friend Zhao Wenxue Weish sent me a handwritten copy, which I kept in a chest for twenty-five years. Among all the books on obstetrics I have seen in my life, none surpass this one; it is truly precious. In the spring of the second month of the Renyin year of the Daoguang reign, Xu Han of Haichang wrote this preface at Xingwusu Studio in the official residence of Pingdu Prefecture.