In order to enliven the atmosphere, the teacher told a little joke. What does it mean to live?

In order to enliven the atmosphere, the teacher told a little joke, which meant to make the classroom atmosphere relaxed. Joke is a Chinese character, and the pinyin is xiàohua, which means something that makes people laugh. Jokes are short in length, simple and ingenious in story, often unexpected, giving people a wonderful feeling of being suddenly enlightened. Most of them reveal absurd phenomena in life, which are ironic and entertaining.