Han Feizi's fable Spear and Shield has a man who sells spears and shields. He raised his shield and sold it to others, saying that my shield was the strongest, and no matter how sharp the spear was, it could not penetrate. He raised his spear and sold it to others, saying that my spear is the sharpest and even a strong shield can be pierced. The person next to him immediately asked him, "So, what will happen if you poke your shield with your spear?" Hearing this, the Truman was speechless and could not answer a word.

It's about a Chu man who sells spears and shields. He is in an embarrassing situation because of his excessive boasting and exaggeration. The article is short and pithy, with concise language, humorous style and intriguing implications.

Zheng Ren buys shoes.

Zheng has a man who wants to buy a pair of shoes. First, he measured his feet, then drew a size sample and put it on the seat.

He hurried to the market, took a fancy to a pair of shoes, and suddenly remembered, "I forgot to take the measured size." So, I ran back to get the bottom sample. By the time he came back, the market had already dispersed and the shoes had not been bought.

Someone asked him, "why don't you try on your shoes with your own feet?" Why did you come back to see the shoes? "

He said, "I would rather trust my own size than my own feet."

Goethe put it well: "Theory is gray and the tree of life is evergreen." Explaining concrete reality is always higher than theoretical dogma. This is exactly what this fable shows.