In ancient China, it was said that carp would become real dragons as long as they could jump over Longmen (Luoyang City, where Longmen Grottoes are located).

There is also a legend that the Longmen is for opening, and there is a poem praising: What Que has achieved is that with great power, Que is a lost place. When carp yue longmen, there will be Ying Long hovering in the sky. Metaphor promotion, promotion and the like. It is also a metaphor for going upstream and striving for progress.

Long, long ago, before the Longmen was cut, Yishui was blocked by Longmen Mountain, and a big lake was piled up to the south of the mountain. Carps living in the Yellow River have heard that Longmen is beautiful and all want to go sightseeing. They started from the Yellow River in Jin Meng, Henan Province, crossed the Luohe River, followed the Yi River to the splash mouth of Longmen, but there was no waterway on Longmen Mountain, so they had to gather at the foot of Longmen North Mountain. I have an idea. How about we skip this Longmen Mountain? A red carp said to everyone. How can you jump so high? If you can't dance well, you will fall to your death, and your friends will make up their minds.

Red carp volunteered and said, I'll try it first. I saw it exhausted all its strength from half a mile away, like an arrow that left the string, jumping into the clouds for a long time, driving the clouds and rain in the air forward. A mass of skyfire came from behind and burned its tail. It endured the pain, continued to leap forward, and finally crossed Longmen Mountain and fell into the lake in the south of Shannan. In a blink of an eye, it became a dragon.

Seeing this scene, the carp in the north of the mountain huddled in fear and dared not take any more risks. Just then, I suddenly saw a dragon descending from the sky and said, "Don't be afraid, I'm your partner Red Carp, because I jumped over Longmen Mountain and became a dragon." You have to jump bravely, too After listening to these words, the carp was encouraged and began to jump off Longmen Mountain one by one. " But except for a few who jumped into dragons, most of them couldn't get through.

Anyone who can't jump over and fall from the air will have a black scar on his forehead. To this day, this black scar still grows on the forehead of the Yellow River carp. Later, Li Bai, a great poet in the Tang Dynasty, wrote a poem specially for this matter: "Three-foot carp from the Yellow River, originally in Jin Meng, did not grow into a dragon, and returned with all the fish.

The above answers are for reference only.