During the Yongle period of Ming Chengzu, the martial arts were prosperous, and Annan was recovered, and Jiaozhi was set up as the political secretary, and Zhu Di personally led the army to conquer Mobei five times to attack Tatar and Wara after the division of the Northern Yuan. Zhu Di canonized the three kings of Warat, set them against the Tatars, saw that Warat had a tendency to flourish, and helped the Tatars crusade against Warat, so as not to let the power of either side dominate.

At the same time, the autonomy of the three guards of Duoyan, Taining, and Fuyu was granted to the Uliangha Mongols, and Zhu Di also suppressed the Uliangha Mongols in order to maintain stability in the region. Zhu Di pacified the Jurchen tribes in Northeast China, set up guards in the attached Jianzhou Jurchens and Haixi Jurchens, and sent Yishaha to pacify the savage Jurchens located in the lower reaches of the Heilongjiang River. He set up the Nuer Gandu Division in Tallinn on the other side of the river temple street, expanding the eastern territory of the Ming Dynasty, and he inspected Sakhalin Island and declared the sovereignty of the Ming Dynasty over this place.

Zhu Di implemented an active diplomatic strategy, sending Zheng He to the West to carry out political and economic exchanges with various countries, increasing fiscal revenue and pushing the tributary system to its peak. The size of the fleet was unprecedentedly large, reaching as far as Somalia in East Africa, expanding the influence of the Ming Dynasty on the countries of the South and Western Seas.

In terms of cultural governance, Zhu Di asked people to edit the encyclopedia "Yongle Canon", and Xie Jin led 3,000 literati to complete it within three years. The Yongle Canon has 22,877 volumes and more than 370 million words.

Zhu Di changed the name of Beiping to Beijing, set up Beiping Guozijian and other yamen, Zhu Di announced the idea of moving the capital, began to build Beijing on a large scale in the coming year, announced the completion, and moved the capital in the coming year. During the Yongle period, the world was ruled greatly, and overseas exchanges were vigorously explored, and this period was known as the Yongle Prosperous Era.

Zhu Di's strong repression of dissent, such as Huang Zicheng, Qi Tai and other former ministers of Emperor Jianwen were killed. Among them, Fang Xiaoru's Zhu Shi clan and Jingqing's melon vine copy are the most tragic. He also restored the Jinyi Guard, which was later abolished during the Ming Taizu period, and also set up another spy organization, Dongchang.

Jing Qing's original surname is Geng, and he is the imperial historian of the Jianwen Dynasty. In the first year of Jianwen, Zhu Di, the king of Yan, launched the Jingyan Rebellion, and after entering Nanjing, he was called the emperor, and he was the ancestor of the Ming Dynasty. A large number of officials loyal to Emperor Jianwen were killed, Jingqing wanted to avenge Emperor Jianwen, and pretended to submit to Chengzu, because Chengzu had a friendship with Jingqing, and said with great joy: "Jingqing is my old friend." "Let Jingqing hold the original official position.

One morning in the court, Zhu Di suddenly found that he was wearing a red court dress for major celebrations. Zhu Di felt that the dazzling red color was very weird, so he ordered someone to search his body, and sure enough, he found a dagger from Jing Qing's body.

Zhu Di asked him why he assassinated, and Jing Qing shouted that he wanted to avenge his old master, and scolded constantly. Zhu Di was furious and ordered all his teeth to be knocked out, and Jing Qing sprayed a mouthful of blood water onto the hall, splashing Zhu Di's dragon robe. Zhu Di was furious and ordered someone to skin him, tie him to the Chang'an Gate, cut off his flesh inch by inch, and finally break his bones. Later, Zhu Di still did not understand his hatred, so he invented the famous melon vine copy in Chinese history, that is, the Chiqi tribe, from their hometown, turned to climb and dye, and the village was a ruin.

When Zhu Di ascended the throne, he ordered Fang Xiaoru, who was loyal to the royal family, to draft an edict on his accession. Fang Xiaoru not only preferred to die rather than obey, but also insulted him, and wrote the words "Yan thief usurped the throne" on the edict. Zhu Di angrily threatened to punish the nine clans, Fang Xiaoru was righteous and awe-inspiring, and said with a sneer: "What about the ten clans that punish me?"

Zhu Di classified his protégé friends into the tenth clan and killed them together with the original nine clans. In the end, a total of 873 people were killed, and thousands of people were imprisoned and exiled and confiscated for this incident, which was the only punishment of the ten ethnic groups in Chinese history.

However, the melon vine copy is even more terrifying, and the punishment of the ten clans still has a clear range of strikes, while the melon vine copy is a borderless plant. In the end, all the residents of Jingqing's hometown were killed, the villages in his hometown were in ruins, and everyone who had any relationship with Jingqing was affected.

The predecessor of the Ming Dynasty Jinyiwei was the Gongwei Division and the pro-army Duwei Mansion, Hongwu fifteen years, Ming Taizu Zhu Yuanzhang on a whim, renamed Jinyiwei, set up two towns in the north and south. As the emperor's personal guard, Jinyiwei not only has to protect the emperor, be responsible for the honor guard, but also spy on intelligence, eradicate spies, but also enforce law and discipline, monitor civil and military officials, thieves and traitors, streets and ditches, secret arrest and time to save it, Jinyiwei is very beautiful for a while.

Although Jinyiwei is powerful, after Ming Chengzu Zhu Di came to power, he always felt unsure, after all, he ascended the throne by usurping power, and there are still many opposition forces, and consolidating the throne is the first priority. For this reason, in the eighteenth year of Yongle, Zhu Di began to set up the East Factory and hit the officials. Dongchang is the abbreviation of Dongji Factory, the leader is a trusted eunuch by Zhu Di, and many capable Jinyi guards are also selected to serve as subordinate officials and business backbones in Dongchang.

Compared with Jinyiwei, the function of Dongchang is to visit and seek rebellion, evil and evil, etc., although nominally equal to Jinyiwei's power, but Dongchang in addition to the function of Jinyiwei, his detection scope is wider, his actions are more rigorous, and he can also report directly to the emperor without a chapter. Later, Dongchang had a prison, and the power was greater, once the emperor heard the wind and grass, the problems of the hundred officials could be investigated by Jinyiwei, and the problems of the imperial family were investigated and handled by Dongchang. In addition to investigating and handling major cases, Dongchang also has a responsibility, that is, to monitor Jinyiwei and override Jinyiwei.

From the time of Zhu Di to the middle and late Ming Dynasty, the East Factory held great power until the appearance of the West Factory, and the setting of the West Factory was completely accidental. In the twelfth year of Chenghua, a minister named Li Zilong easily broke into the deep courtyard of the inner palace, which made Ming Xianzong feel very unsure, thinking that there were secret channels inside and outside the palace. In order to strengthen the rule of the spies, Ming Xianzong added the West Investigation Factory in addition to the East Factory in the following year, referred to as the West Factory, and the leader was the great eunuch Wang Zhi, and the factory members were selected from Jinyiwei.

Although it is called the factory guard together with the East Factory and Jinyiwei, the power of the West Factory exceeds that of the East Factory, and the scope of investigation extends throughout the country from Beijing. The West Factory not only had the functions of Jinyi Wei and Dongchang, but also had its own prison and court, and without asking the emperor, he could arrest, torture, and interrogate the ministers of civil and military affairs at will, and local officials and ordinary people were also within the scope of his surveillance, and they were unscrupulous. At the same time, the West Factory also has a function, that is, to monitor the East Factory, and the power flame comes from the East Factory. Five months later, because of the opposition of the government and the opposition, Ming Xianzong was forced to cancel the West Factory.

During the reign of Emperor Wuzong of the Ming Dynasty, Emperor Zhu Houzhao was a player, ignoring the government and politics, and was a sitting emperor, and the great eunuch Liu Jin was in power and was called the emperor. Zhu Houzhao was very individual and could not listen to the advice of his subjects, so he re-established the West Factory in the first year of Zhengde. At that time, the east factory was in charge of Ma Yongcheng, and the west factory was in charge of Gu Dayong, both of whom belonged to the Eight Tigers and won the favor of Ming Wuzong.

Although Liu Jin is the head of the Eight Tigers, he has internal intrigues, fights for power and profit, does not give in to each other, and demolishes each other, so Liu Jin has conflicts with Ma Yongcheng, Gu Dayong and others. In order to consolidate his position as the boss, in the third year of Zhengde, Liu Jin set up an inner factory, led by Liu Jin, and went out with the East Factory and the West Factory.

The inner factory and the East Factory, the West Factory, and the Jinyi Wei are collectively called the factory guards, but Liu Jin, as the master of ceremonies and eunuchs, is also the indispensable emperor, and he is in charge of the inner factory, and the specifications and power of the inner factory are naturally higher than the West Factory, the East Factory and the Jinyi Guard. Compared with other factory guards, the insider factory has a larger organization, more spies, stricter systems, and a wider scope of investigation, in addition to monitoring the subjects of the world, the east and west factories are also under his supervision.

In addition to supervising and commanding the rest of the factory guards, the insider factory also has the right to detect the whereabouts of any subject below the Son of Heaven, and is the largest spy agency in the Ming Dynasty. It can be said that from Jinyiwei, East Factory, West Factory to the Insider Factory, the four came later, and the Insider Factory appeared the latest among the four, but his powerful position was above the other three factory guards. At that time, in order to control the government, Liu Jin was extremely harsh on the opposition forces, and he was sentenced to the side forever, or sent to the flails with a shackle, and died in a few days.

The 150-pound flail was put on the shoulder, and little by little people were slowly tortured to death, which was more tragic than the punishment of cane, beheading, and execution. In the past few years, thousands of officials, soldiers, and civilians have died illegally, and everyone has changed color when talking about insider factories, and they will kill themselves if they do many injustices.

In the fifth year of Zhengde, Liu Jin was executed for rebellion, and after Liu Jin was killed, the West Factory and the Insider Factory were abolished, leaving only the East Factory. The insider factory only existed for two years, but it took the arrogance and viciousness of the spies to the extreme, and also brought great disasters to the subjects of the Ming Dynasty.