This book records the fulfilled life of Mr. Xu Jialiang, who contributed to the medical industry and national development with his professional abilities as a medical worker. Mr. Xu lived through major historical events such as the Japanese occupation of Shanghai during the War of Resistance, the founding ceremony of the People's Republic of China, his participation in the medical development in western China, his support for the country's Third-Front Movement, active participation in reform and opening up, and the new era of the 21st century. He witnessed the changes of Chinese cities and society from the early days of the People's Republic of China to the forty years of reform and opening up. The book indirectly presents the history of urban development, society and migration, reflecting the life trajectory of a generation of intellectual and the historical changes in Chinese society in the 20th century.