Red bean and black bean joke

Wen Yanbo, the word kuanfu, the number should be searched. A famous politician and calligrapher in the Northern Song Dynasty.

The story of "Wen Yanbo counting beans" in ancient China tells that Wen Yanbo prepared two jars when he was a child. When he did something wrong, he put black beans in the jar. He puts red beans when he does good deeds. Every day, he checks the number of red beans and black beans. Over time, there are fewer black beans and more red beans. When he grew up, Wen Yanbo became a famous figure in the Song Dynasty.