According to today's headlines, The Oil Man is a very classic story. It's a seventh-grade textbook published by People's Education Press. The story is excerpted from Ouyang Xiu's Record of Returning to the Field, which is a small collection of Ouyang Xiu's essays in his later years. Through some short stories, the author explains the truth in very popular language, so as to achieve the writing purpose of recording facts and defending doubts.
The same is true of the story of "Oil Selling Weng", which tells the story of Chen Yaozi, the top scholar, and an oil selling Weng. Those who are good at archery are favored by the man who sells oil. He asked in a rage, the old man selling oil put the gourd on the ground, put a copper coin in the mouth of the gourd, and poured oil into the gourd from the hole of the copper coin, explaining that I was only good at technology.