During the Three Kingdoms period when the average life expectancy was only 30 or 40 years old, Sima Yi lived to be 73 years old and outlasted Cao Cao. He took over Cao Cao's position and made him a worker. The pensioner has no other requirements, but only hopes to be free of illness and live longer. Although the contract can earn a year's money in one day, it can also make ten years' money in one day. All historical realizations are good, telling us that good health is the capital of revolution, and only those who live long can have the last laugh.