How did you tell me the joke that mung bean flies are bees when I was a child?

Don't do things carelessly. According to relevant information, when I was a child, I treated the mung bean fly as a joke of bees and told us not to be careless. Joke is a Chinese vocabulary, 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.