The historical stories of the Yellow River and the Yangtze River are shorter.

Longmen is located about 65 kilometers south of Hukou Waterfall, the southernmost tip of Shanxi-Shaanxi Canyon. To the south of Longmen is the open and flat Guanzhong Plain. The water of the Yellow River suddenly enters the wide river bed from the narrow Longmenkou, and the nature of the river course has changed greatly. The formation of Longmen is that Longmen Mountain in the east and Liangshan Mountain in the west extend out of the ridge, close to each other, forming a narrow mouth only 100 meters wide, like a huge clip, which binds the river and forms a swift current. Every flood season, due to the high water level in the gorge, the valley suddenly widens and the water level suddenly drops after leaving the gorge, so there is an obvious water level difference in Longmen, so there is a saying that "Longmen fell into the water three times". The story of "Carp yue longmen" handed down from generation to generation refers to the drowning here. The story tells the story of the little carp's trip one after another on the way to Jackie Chan, regardless of difficulties and obstacles. If they can jump over, they will become Jackie Chan. Only those indomitable little carp can eventually become Jackie Chan. For thousands of years, this story has also inspired the descendants of the Chinese people to strive for self-improvement and struggle. The ancient people felt incredible about the formation of Longmen Gorge, a natural wonder, and imagined it as a canyon dug by Dayu, so Longmen was also called "Yumenkou".

2. The story of Dayu's water control

Legend has it that during the reign of Emperor Yao, floods often occurred in the Yellow River basin. In order to prevent floods and protect agricultural production, Emperor Yao once called a meeting of tribal leaders to solicit water control experts to calm the floods. Gun is recommended to be in charge of this work. After accepting the task, Gun used dikes to block water and made a three-block city, that is, surrounded residential areas with simple dikes to block floods. After 9 years of failure, he was finally exiled to Yushan and died. After Shun Di ascended the throne, Gun's son was appointed to manage the water source. Summing up his father's experience in water control, Yu changed the "blocking obstacles" of Gun to "dredging stagnation", that is, using the natural trend of water flowing from high to low, dredging blocked streams in the right direction. The flood was introduced into dredged rivers, depressions or lakes, and then connected with the four seas, thus calming the flood and enabling people to move back from the highlands to Pingchuan to live and engage in agricultural production. Later, Yu became the first king of the Xia Dynasty, and was called "Shen Yu", which was passed down from generation to generation.

In the process of Dayu's water control, he left many touching deeds. According to legend, with the help of his original measuring tools-ruler and ruler, he traveled all over the north and south of the river, split the Longmen and Izui with a magic axe, and cut through Jishi Mountain and Qingtongxia to make the river unimpeded. He has lived away from home for 13 years, but he hasn't entered the house three times. Even his newborn child didn't have time to caress him. He took the lead in suffering, and the hair on his legs was polished in labor. He is the first hero in the history of China who successfully managed the Yellow River flood.

3. The whip was cut off

? According to the Northern Wei Dynasty. Cui Hong's Records of the Former Qin Dynasty, during the first year of Xiaowu in the Eastern Jin Dynasty, after Fu Jian, the former Qin Dynasty, unified the north, he decided to mobilize millions of troops to destroy the Eastern Jin Dynasty and unify all China. Fu Jian called ministers to discuss, and many ministers disapproved. One of them, Shi Yue, dissuaded him and said, "From the astrological point of view, this year is not suitable for going to the South. What's more, according to the risks of the Yangtze River, the King of Jin won the support of the people. We might as well stick to our national strength for the time being, produce an entire army, wait for the internal looseness of the gold, and then wait for an opportunity to attack. Fu Jian said disapprovingly, "The astrology is not credible. As for the Yangtze River, Fu Cha, the King of Wu in the Spring and Autumn Period, and Sun Hao, the Lord of Wu in the Three Kingdoms Period, all suffered from the natural hazards of the Yangtze River and finally had to perish. Now I have nearly a million troops. Just throwing my whip into the Yangtze River is enough to cut off the river. What natural barriers are we afraid of? "Fu Jian regardless of the opposition of ministers, decided to send troops to attack Jin, personally led an army of eight hundred thousand, forcing him to attack the Eastern Jin. Eastern Jin generals Xie Xuan and Xie Shi led 80,000 soldiers to resist the enemy. Fu Jian underestimated the enemy and tried to attack quickly with the advantage. However, it was stubbornly resisted by 8 Jin Army, and was defeated by 8 Jin Army at Feishui. Since then, the former Qin dynasty has never recovered. Later, the idiom "the whip is cut off" evolved from the original text "My people throw a whip into the river, which is enough to cut off its flow", and it is used to describe the large number and powerful force of the army.