Mathematician Su Buqing, at the age of 50, fell in love with taking cold baths, spring, summer, autumn and winter, never stopping, even in temperatures of minus 5cC

Mathematician Su Buqing fell in love with taking a cold shower at the age of 50, spring, summer, autumn and winter, never stopping, even in the temperature of minus 5cC, it was first rinsed with cold water for 5 minutes, and then wiped the whole body red with a towel, and persisted until the age of 75. For decades, due to the insistence on physical exercise, Su Buqing's physical fitness is excellent. Even in the old age, the stairs up five or six floors are still not breathless, and the teeth in the mouth are similar to those in the prime.