It is said that thousands of years ago, there was a fierce beetle with eight legs and two claws in the river and lake. Not only does it steal rice, but it also hurts people with claws, so it is called "human-trapping worm". Later, Dayu went to the south of the Yangtze River to control the water, and sent a strong man, PLO, to supervise the work, which seriously hindered the project. The PLO figured out a way to dig a trench around the city and fill it with boiling water. People and insects came over, and they fell into the ditch and burned to death. The scalded insect was flushed and gave off an attractive and delicious fragrance. The plo broke the shell curiously, and the smell was stronger. I got the nerve to take a bite, but the taste is fresh and delicious, which is better than anything else, so the feared pests have become a household name. In order to thank PLO, who dared to be the first in the world, we added the word "worm" under the word "Xie", which means PLO conquered the worm and was the first crab eater in the world.

this is a legend, and there is no source.

at present, we can find the earliest clear record about "the first person to eat crabs in the world", and only Guo Xian's "The Story of the Cave in Hanwu" written in the Eastern Han Dynasty is called "The Story of the Cave" for short. The third volume is: "Shanyuan country tasted a crab, which was nine feet long and had four claws, so it was named as a hundred-legged crab. Boiling its shell is better than yellow glue, which is also called chelating glue, and it is better than the glue of phoenix beak. " Most of the strange things in Dong Ming Ji are nonsense, but its words are gorgeous, and some materials have certain academic value, so later generations of scholars are willing to quote them. Shanyuan is one of the countries in the western regions. According to the "Records of Foreign Bodies in Lingnan" quoted in Taiping Yulan, "If you try to travel to the sea, you will get a state island, and the trees are very lush. You are a boat climbing a cliff and tied to the water. You can't cook for a while, but the cable is suddenly broken, so you can get there. Look at it carefully, and the big crab is also there." Therefore, it can be seen that the crabs that China people eat for the first time may be sea crabs. The hundred-legged crab may be the literary image of the sea crab. As for whether Emperor Wu of the Han Dynasty was the first person to eat crabs in China, I make a wild remark, so you might as well listen to it.

Answer 2:

There is a story about this problem. It is said that people tried many ways to solve the crab disaster in Shaoxing one year. Later, a tout gave us a way to make a broken tank, let the tank be filled with salt water to wait for the crab to climb in, let the salt water sting it, and finally all the crabs were killed. When people couldn't deal with these crabs, it was the tout who stood up first.