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In ancient times, there was a merchant of Chu who sold spears and shields.
The businessman waved his spear and shouted to passers-by, "Take a walk and have a look. My spear is very powerful. It can penetrate any self-defense weapon, even if it is very strong. " After that, the merchant picked up the shield and shouted, "Don't miss it when passing by. My shield is the best in the world. It is ancient and powerful. It can resist any sharp weapon and ensure that you can't buy at a loss and won't be fooled. "
After listening to all kinds of touts from businessmen, people have come forward to buy this "invincible" spear and shield. At this moment, an old man came forward and asked with a smile, "You said that your spear can pierce any solid, and you said that your shield can resist any sharp weapon. How about stabbing your shield with your spear? "
The businessman opened his mouth wide and was about to say it, but he swallowed it. His face turned red at once. He wiped the sweat from his face and smiled. His eyebrows were pulled down, as if a big word had been written on his eyes. His eyebrows are as black as ink. His mouth was wide open and he wanted to say something, but he didn't say it.
Suddenly, he smiled and said, "Well ... you see, it's getting late. I have work to do. " After that, the businessman packed his things and ran away without a trace.
This story tells us that there can be no indestructible shield and spear in the world. Businessmen exaggerated the role of spears and shields, and as a result, they could not justify themselves.