Zhu Kezhen, a famous meteorological geographer and educator, was born in 1890 and died in 1974 at the age of 84. He is very old, but he was not good at keeping in good health in his early years. He wrote in his diary three months before his death: "I was in poor health since I was a child, and now I live to be 83 years old." What else can I ask for? " It turns out that he studied in Shanghai Chengzhong Middle School in his early years, and his health has been poor because he studied too hard. At that time, one of his classmates named Mao, namely Hu Shi, once made a bet behind his back that Zhu Kezhen would not live to be 20 years old. Zhu Kezhen overheard this sentence, broke out in a cold sweat and vowed to exercise from now on. Later, he went to study in the United States with Hu.

19 12 years, they met and started gambling. Zhu Kezhen asked, "What if I live to be in my sixties?" Hu Shi readily replied: "If you live to be 60 years old, I will kowtow to you three times in front of all my relatives and friends on your 60th birthday. If you live longer than me, you can kick my corpse's ass. " "All right. You must remember what you said today! " Zhu Kezhen said.

Later, Zhu Kezhen lived to 1974, at the age of 84, and died suddenly in Beijing. He kept a diary until the night before his death. Hu Shi only lived to 1962 at the age of 7 1. However, due to two friends, one in Chinese mainland and the other in Taiwan Province, Hu Shi had no chance to kowtow to Zhu Kezhen on his 60th birthday. When Hu Shi died, Zhu Kezhen didn't kick his ass. Zhu Kezhen lamented in his diary that Hu Shi, a "wise man", had predicted his early death, which turned out to be a lie. From then on, Zhu Kezhen attached great importance to his health and fell in love with sports.