1 / 4   Wu Mengchao, the 96-year-old founder of hepatobiliary surgery in China, operated on a patient in Xuzhou, east China’s Jiangsu Province on Friday. /VCG Photo

2 / 4   Despite his age, Wu still operates on patients who suffer from hepatic disease and carefully make preparations every time before the surgery. /VCG Photo

3 / 4   During the operation, many doctors came to observe and study Wu's expertise. /VCG Photo

4 / 4   Wu started his research in hepatobiliary surgery in the 1950s. He created the key theoretical system of the disease and founded the world’s largest research and diagnosis center of hepatic disease in China, earning him the name of “the father of hepatobiliary surgery” in the country. /VCG Photo