A joke about my uncle

An old man with a fairy wind and a crane bone hit Tai Ji Chuan in the park, and every move was very powerful. At this moment, a young man came over and said, "The old man is so good at kung fu. How did he practice? " The old man said, "I'm standing still. Try hitting me with your best strength! " "So the young man punched the old man hard, and the result was twenty-six thousand.