What are some of the most simple mistakes in history that have had serious consequences?

Guan Yu carelessly lost Jingzhou, Zhang Fei was killed drunk, and Liu Bei insisted on fighting and did not listen to Zhuge Liang's words.

Liu Bei insisted on constantly exhorting Zhuge Liang to avenge his sworn brother, and in the end he was burned to the company's camp, not only did he die. It also led to the decline of Shu's national strength.

A flight in Japan crashed because it missed a row of rivets, killing 520 people, the deadliest in the history of air crashes.

Due to Guan Yu's carelessness, he missed Jingzhou, which was a place where the Three Kingdoms would fight, and Shu lost its foundation.

Emperor Chongzhen sent many people with positions home because he wanted to cut expenses, and as a result, Li Zicheng lost his job, rebelled, and destroyed the Ming Dynasty.

Japanese aviation because of the lack of a row of rivets, and then the plane crashed, many people died, and only four survived.

Guan Yu once spared Cao Cao's life in order to repay his kindness, how did he know, how did he know that this hero had risen all of a sudden!

Historically, if a ruler makes a slight mistake, it can also rewrite history.

At the beginning of the 15th century, "Zheng He's voyage to the West" China was the richest and most powerful country in the world, whether in terms of its scientific research, its printing technology, the development of its civilization, and its international development, China was the world's leader.

But 70 years later, such a fleet slowly fell, and finally when Zheng He died, the entire human ocean can no longer see the Chinese fleet, but the Netherlands and Spain appeared, achieving the status of the Netherlands and Spain as a world power. Since the discussion in the 15th century, in fact, to a certain extent, it is not only the history of mankind from the international **, from the maritime age of the 15th century, it is a very important generation, that is, how China has become not the most dazzling power in the world step by step from the richest and most powerful country, and in this process, we can actually learn a very important political philosophy and the whole thinking, that is, as long as a country has a leader, he can rise if he does one thing right. As long as a leader or an institution does not know how to change, and keeps making mistakes, no matter how strong the country is, it will fall step by step, and the problem is only his time.

In 496 B.C., King Wu Lu sent troops to attack the Yue Kingdom, but was defeated by the Yue Kingdom, and He Lu was also seriously injured and died, so the Yue King Goujian was arrogant and neglected to govern the army.

Two years later, Fu Cha, the son of Helu, led his troops to defeat the Yue Kingdom, and the Yue King Gou Jian was defeated and was escorted to the Wu State as a slave.

In fact, Gou Jian did not give up his heart of revenge, he ostensibly obeyed the king of Wu, but secretly trained elite soldiers, strengthened the government and waited for the opportunity to counterattack the Wu state.

Hardship can temper the will, but comfort will wear out the will.

Gou Jian was afraid that he would covet the comfort in front of him and lose his will to take revenge, so he arranged a difficult living environment for himself.

He slept at night without a mattress, but only laid some wages (firewood and grass), and hung a bitter gall in the house, which he tasted from time to time, in order not to forget the shame of the past.

In order to encourage the people, Gou Jian and the queen participated in the labor with the people, and made the Yue Kingdom strong under the concerted efforts of the Yue people, and finally found the right time to destroy the Wu State.

In 1986, the space shuttle Challenger disintegrated 73 seconds after its launch, killing all seven astronauts on board. The cause of the failure was attributed to a leak in the feeder of the solid-state rocket.

The US Space Shuttle Columbia Accident Committee recently pointed out that strong winds during takeoff, temporary replacement of rocket boosters before launch, and "too old" may be the root causes of the disintegration of the Space Shuttle Columbia.

Cask In 1249, the city of Bologna, located in what is now northern Italy, was then a city-state. There was a serviceman who served in the army who fled from the city to Modena in the north and took with him an old wooden barrel for drinking horses. The Bologna side demanded that the city of Modena return the barrel, but it refused, and for this trivial reason, it led to a bloody war between the two cities, which lasted for 23 years.

Beard In 1136, when King Louis VII of France married Elano, daughter of the Duke of Aquitaine, he was given dowries in two southern French provinces. Louis VII had a beautiful beard, which the queen liked very much. But Louis VII shaved off his beard after returning from the crusade, and the queen, believing that the king was not as handsome as before, began to snub him, and eventually divorced Louis VII in 1152.

Elano soon married Henry, Count of Anjou, England, and asked Louis VII to return the dowries of the two provinces to her new husband. Louis VII refused to surrender, and Henry II declared war on France. The war lasted for 301 years and ended in 1453.

Xiang Yuyi killed the Yi Emperor, and as the overlord of Western Chu, killing a child herding sheep attracted the hatred of the whole world, which was very wrong.

The second is to set the capital of Pengcheng, I don't know if there is feng shui, anyway, there is no majesty of the Son of Heaven, and it is easy to attack and difficult to defend, Liu Bang took advantage of Xiang Yu's attack once when he went out to fight, and he succeeded, and later although Xiang Yu grabbed it back, it was no longer that taste.

The third is to let Liu Bang go, I believe that Xiang Yu regretted this intestine when he thought of it by the Wujiang River. The reason couldn't be simpler, after Liu Bangniu got up, it was nothing that he couldn't speak accurately, and in the end he even lost his life in the hands of Debang.

The fourth is to force Fan Zeng away, and in the same way, Xiang Yu can not think of this old man by the Wujiang River, he will not blame himself in his heart: "If I had listened to him at that time. "Unfortunately, it's too late.

The princes of the beacon fire, the king of Zhou You in the Western Zhou Dynasty, smiled for praise, lit the beacon tower, and teased the princes. Bao Xi laughed when she saw it. The King of Darkness was very happy, so he lit the beacon fire many times.

Later, the princes didn't believe it, and they gradually stopped coming. Later, Rong Di invaded, and King Zhou You lit a beacon fire, but the princes did not think so, and no one went.