Zhang Sui-chen, courtesy name Qingzi, pseudonym Xiangqi, originally from Jiangxi, moved to Qiantang (now Hangzhou City). He was born in the 17th year of the Wanli era of the Ming Dynasty (1589 AD) and died in the 7th year of the Kangxi era of the Qing Dynasty (1668 AD), living to the age of 80. In his early years, he studied Confucianism at the Imperial Academy and was a scholar during the late Ming Dynasty. Due to his frail health and frequent illnesses, he began to study medical books daily, gradually mastering the art of medicine. He not only treated himself but also healed the public, often with remarkable efficacy. He first settled in Wukang (now Deqing County) at Sanqiao Village. After the fall of the Ming Dynasty, he returned to Hangzhou and lived in the eastern part of the city in Acorus Lane (later known as Zhang Qingzi Lane), living as a remnant of the former dynasty. In his later years, he became renowned nationwide for his expertise in treating cold-damage disease and authored the seven-volume "Zhang Qingzi's Treatise on Cold-Damage Disease." This book is based on the "Zhujie Shanghan Lun" and incorporates the theories of Zhu Gong, Xu Shuwei, Pang Anshi, and Wang Lyu, among others, with a discerning selection of discussions and his own insights.