During the Qing Dynasty, the Kangxi Emperor was highly evaluated in Chinese history, and some people said that he was an emperor throughout the ages. Under his leadership, the Qing government at that time the economy flourished, people's living standards were greatly improved, and society slowly stabilized, creating a good start and laying a solid foundation for the later dynasties. But such an emperor, who has made great achievements, has also made major mistakes. What does this come from?

At that time, various scientific and technological undertakings in China were developing rapidly. There was a young man named Dai Zi, who was intelligent and good at inventing, and he soon became a well-known skilled craftsman, and his favorite thing to study was artillery, which was similar to the current pistol weapon, and the artillery he invented, and even sometimes the hit rate reached one hundred percent, which showed how powerful it was.
When the Qing government was fighting against Wu Sangui's army, it was with such weapons that it won a comprehensive victory. The biggest contributor to this victory was Dai Zi's artillery. However, the Kangxi Emperor thought that this was nothing, and at the end of the war, when Dai Zi returned to the court in victory, the Kangxi Emperor casually gave him a small errand and perfunctory.
Dai Zi was also an unflappable person, and he felt that by doing things at Hanlin Academy, he could concentrate on studying his own artillery, and his days went on like this, as if the Kangxi Emperor had gradually forgotten Dai Zi as a person. However, the development of things has taken a turn, so Dai Zi's talent can be brought into play again.
When the Dutch emissaries came to China to worship, they offered a shotgun to the Qing government. He also boasted about how powerful his shotgun was, which made the Kangxi Emperor's face not know where to put it. The Kangxi Emperor was also a little unconvinced, and immediately found Dai Zi and asked him to analyze the shotgun carefully, and he tried to make such a gun himself and save the face of the Chinese.
Dai Zi lived up to expectations, and in less than a few days, he analyzed the Dutch shotgun very thoroughly, and even in some places, made good improvements, so that the power and accuracy of the shotgun were greatly improved. In this way, it suddenly hit the Dutch in the face, so that the Dutch emissaries had a new understanding of the Qing government. After this incident, Dai Zi also received the attention of Kangxi, and slowly he also became famous, so that many people knew. Later, Dai Zi also developed a powerful cannon, which greatly enhanced the military combat effectiveness of the time, so that the Qing government could win every battle from then on.
But many things are often unpredictable. Dai Zi's ingenuity made the missionary Nan Huairen very red-eyed, he himself was eating the food of selling weapons, and there were talents like Dai Zi who obviously did not get half a benefit himself. Therefore, secretly falsely accusing Dai Zi, the Kangxi Emperor trusted Nan Huairen very much at that time, listened to his one-sided words and exiled Dai Zi to the frontier, so that Dai Zi's skills were useless, and finally died of illness on the frontier.
It is a pity that a person with intelligence like Dai Zi was buried like this. The reason why the Eight-Nation Alliance was able to invade Beijing with impunity was entirely based on the ship's strong guns, and if Kangxi had not punished Dai Zi, given full play to his wisdom and wisdom, and manufactured many firearms for the Qing Dynasty, presumably the Eight-Nation Alliance at that time would not have dared to attack Bauhinia City.