Around 900–1000 Advert, Chinese were being the first to develop a type of vaccination, called variolation or inoculation, to stop smallpox. Chinese physicians had realised that when healthy people were subjected to smallpox scab tissue, that they had a scaled-down potential for currently being infected through the illness afterward. https://codytj4x9.bcbloggers.com/26388144/what-does-chinese-medicine-acupuncture-mean