On this day 121 years ago, on September 29, 1904 (August 20, 1904 lunar calendar), Yi Jianlong, the founder of China's blood transfusion and rescue business and the founder of modern blood banks, was born. Yi Jianlong, formerly known as Jia Qiu according to the ranking, was born on September 29, 1904 (August 20, the first lunar year) in rural Xiangyin County (now Miluo County) in Hunan Province. His date of birth was shortly after the Mid-Autumn Festival. According to the folk customs of his hometown, dragon dances are performed during the Mid-Autumn Festival. Before giving birth to him, his mother saw someone dancing dragon in front of the house, so she named him "Jianlong". Later, he liked the name very much and used the name "Jianlong" after going to school. From 1918 to 1922, when he was studying at Yali Middle School in Changsha, he came into contact with foreign books introducing the deeds of scientists. His feelings were very deep, and he buried the idea of learning from the sages, science, and the benefit of mankind in the depths of his soul. When he was in college, his sister died of meningitis, so he was determined to study medicine. In 1923, he was admitted to the preparatory department of Changsha Xiangya Medical College, and entered the undergraduate program in 1925. During the era of warlords and melee, in 1926, Xiangya Medical College was forced to suspend its operation, so he transferred to Wuchang Sun Yat-sen University Medical College. Due to the rapid development of the Great Revolution, he resolutely joined the army and participated in the Northern Expedition in 1927. He served as a lieutenant propagandist in the editorial department of the Propaganda Department of the General After the coup d'état, the Nationalist government of Wuhan followed Chiang Kai-shek's anti-communism, Yi Jian Long left the team and returned to Hunan, and then went to Guangzhou to apply for the pharmacy of Dongshan Army Hospital as a medicine director. He re-enrolled in the National Shanghai Medical College in 1928. When he graduated in 1933, he won a gold medal for his five-year studies, which were the first in the class. After graduation, he followed Cai Qiao to Shanghai Rashid Medical Research Institute (HenryLesterInstitute) as a researcher, studying the role of the liver in maintaining blood sugar concentration, etc., and published 5 papers. He could not bear the discrimination and exclusion of Chinese researchers by the British leader of the physiological science group of the institute, B.E. Reid. In 1935, he left his job angrily and joined Cai Qiao as a lecturer in the department of science at Nanjing Central University Medical College, which was just established at that time. The equipment, conditions and treatment were much worse. He has collaborated with Cai Qiao to publish several papers in ChineseJournalofPhysiology (Chinese Journal of Physiology).