Zhou Jia told Liu Yi about Li Yu wanting to run a school on the farm. He said to him, "You're reliable, so I'll leave the matter of finding a teacher to you. The teacher will teach the children how to read and calculate. He doesn't have to be too knowledgeable. He just has to have an upright character."
Liu Yi thought for a moment and remembered someone. He bowed and said, "Sir, I know a person with good character and knowledge, but he's a little disabled. What do you think?"
Zhou Jia thought to himself that it was just teaching the child how to read and calculate. As long as his character was good, it was fine if he was disabled. "Oh! What did he do originally?"