On one occasion, Jia Dao rode a donkey into the official road. He is thinking of a poem, the original poem is as follows: living in seclusion with few neighbors, the grass path into the desert garden. Birds inhabit trees by the pool, and monks push the moon down the door. Walking across this bridge, you can see the charming scenery of Ye Yuan, and the feet of clouds seem to be moving on the floating rocks. I will leave here for a while, but I will come back and retire with my friends on the appointed date. However, there is one thing he can't make up his mind about, and that is "the monk pushes the moon down the door" in the second sentence. But he didn't think it was appropriate to push, so he knocked. My mouth is chanting. Unconsciously, he rode a donkey into the honor guard of Han Yu, a senior official. Han Yu asked Jia Dao why he trespassed. Jia Dao read the poem he wrote to Han Yu, but he couldn't make up his mind whether to say it again with "push" or "knock". Han Yu laughed and said to Jia Dao, "I think it's better to knock. If the door is closed, how can you push it open? Besides, it is polite to knock on other people's homes at night! In addition, the word "knock" adds a little more noise in the dead of night. There is movement in the silence, is it not lively? " Jia Dao listened to nodding. Not only did he not get punished this time, but he also made friends with Han Yu. Since then, scrutiny has become a popular word, which means that when doing an article or doing something, you can get the best result through repeated thinking and thinking.