C522 Merit and hard work

Zhang Gongshan was 53 years old this year, and he was promoted step by step from being a first-rate teacher. Because he had worked too hard in the past, he suffered from an occupational disease such as lumbar spine hyperplasia, pharyngitis, periarthritis, and varicose veins in his legs, all of these things had come to him. Although he could control them by injecting and consuming medicine