Wu Cheng, courtesy name Jianquan, also known as Shilang, was a native of Lingnan in She County, living during the Kangxi and Qianlong eras of the Qing Dynasty. In his youth, Wu Cheng was diligent in his studies and well-versed in the classics and history, with a particular interest in the study of the "Book of Changes." After repeatedly failing the imperial examinations, he abandoned Confucianism to pursue medicine, applying the philosophical principles of the "Book of Changes" to his medical studies and clinical practice. His treatments were remarkably effective, and he became renowned for his ability to cure even the most severe illnesses. During his medical career, he observed that "few treat deficiencies, many cause deficiencies, few die from illness, many die from medicine," which led him to specialize in deficiency syndromes, dedicating his life to their study. He compiled various schools of thought and combined them with decades of clinical experience, culminating in the publication of "Buju Ji" in 1739, during the Qianlong era. This work holds significant academic value in the history of Chinese medicine and remains an essential read for practitioners today, offering important practical guidance. Additionally, he left behind other works such as "Cold-Damage Disease: Clear Guidelines for Treatment," "The Divine Book of Tuina," "The Integration of the Book of Changes and Medicine," and "Medical Cases of Shilang."