Tang Zong-hai (1846~1897), styled Rongchuan, was a native of Peng County, Sichuan. In the 15th year of Guangxu (1889), he passed the imperial examination as the 35th ranked Jinshi in the third class and was appointed as a secretary in the Ministry of Rites. Tang had already possessed advanced medical skills in his early years and practiced medicine as his profession. Later, he moved to Beijing, Shanghai, Guangdong, and other places. In his later years, he returned to his hometown and passed away in Peng County.

Tang Zong-hai specialized in internal medicine and had profound research on various bleeding disorders. In terms of specific measures, he proposed four major methods: stopping bleeding, eliminating stasis, calming blood, and replenishing blood, which enriched and developed the qi and blood theory of Chinese medicine, and opened new avenues for later generations in treating bleeding disorders. Tang Zong-hai attempted to integrate the theories of Chinese and Western medicine, "without holding onto the differences between regions, but seeking a balanced and unified approach." Tang Zong-hai's works include "Xiezheng Lun" in 8 volumes (1864), "Essence of Chinese and Western Medical Classics" (also known as "Judgment of Chinese and Western Medicine," "Explanation of Chinese and Western Medicine," "Introduction to Chinese and Western Medicine" in 2 volumes (1892), "Bencao Wenda" in 2 volumes, "Annotations and Corrections on Cold Damage Disease Theory" in 7 volumes, and "Annotations and Corrections on Jingui Yaolue" in 9 volumes. These five books are collectively known as "Ten Thousand Varieties of Chinese and Western Medical Books." Regarding the "Integrated Medical Books," the "Qing Dynasty Continued Literature Examination" once commented: "Modern medical practitioners, those who favor the new tend to lean towards the West, while those who cling to tradition tend to lean towards the Chinese. Neither has fully integrated and understood the books from both China and abroad, achieving a balanced and appropriate approach...Tang lamented this, and with meticulous thought, he wrote these five books, using the handle to cut the handle, the principle is not far."