The surviving prisoners of war were kept in one place. What looks like an ordinary prisoner of war camp on the outside is actually the first eunuch manufacturing center in Chinese history. Half a year later, a group of well-trained eunuchs came out, and they fully met the standards of the heavenly eunuchs, and they were more suitable for the current people than the ordinary heavenly eunuchs. According to the tribe's statistics, more than 50 of the 130 prisoners of war died on the day of the operation, which means that more than 70 people survived. More than 30 prisoners of war died one after another in half a month, and only about 30 were able to stand up and receive training. Some people couldn't stand the blow and committed suicide, and some people were beaten to death for not listening to discipline. In the end, there were nineteen eunuchs who completed the training and passed the training. Five eunuchs remained in the tribe to serve their masters of status, and the others were sold to people from other tribes. Prisoners of war were worthless, but eunuchs were in high demand, and fourteen eunuchs sold for four times more than the 130 prisoners of war they had bought. This allowed the tribe to find a way to make a fortune by strengthening the tribe.

At that time, everyone was living in hunger and war, and they were desperate for their own survival. This path to wealth not only strengthens the tribe, but also saves everyone from going to war. So it was agreed to be in secret, and the creation of eunuchs became the tribe's main source of income. As they became more skilled, error rates and fatalities were brought under control. The tribesmen worked together, some specialized in castrating prisoners of war, some in caring for incapable prisoners of war, and some in training castrations. The trained eunuchs will be secretly escorted to other places and sold to those in need. There were no coins at the time, so these eunuchs were exchanged for furs or grain by the tribesmen.

When everyone thought that self-sufficiency would lead to a prosperous and happy life, the tribe had already ushered in the catastrophe of extinction. They can create eunuchs, they can turn ordinary worthless prisoners of war into eunuchs that everyone needs. The news was immediately known to the people of the other tribes, and some powerful and greedy tribes decided to conquer this tribe. It just so happened that this tribe lived a comfortable and happy life, lost its previous fighting spirit, and was immediately defeated and even occupied by a tribe's people. Only then did they know that the man who betrayed them was the eunuch they had trained with their own hands. A family of prisoners of war was made eunuchs by them. He saw his two younger brothers die of pain, and his father's wounds were infected and rotten. I also lived a life that was worse than death under their beating and scolding. In order to avenge himself and his family, he endured until the end. He was sold to others by the tribe as cattle and sheep, and after gaining the trust of his master, he revealed the information of the tribe to his master, and instigated the master to occupy the tribe, which was equivalent to avenging himself and his family.

Because the tribesmen had the ability to create eunuchs, they were not completely wiped out by the occupiers. But they became slaves and still made eunuchs, but the eunuchs they created were no longer their own personal property. They have to work non-stop in order to get their chance to survive. Once they lose their ability to work or skills, the only way that awaits them is death.

The more eunuchs there are, the more experience everyone has. They found that eunuchs had a better complexion than the average man, and could serve as a singer and dancer at some banquets. Even in some cases when there is a lack of female **, let the male owner vent. Because eunuchs are incapable of working and unable to have children, all hope for survival depends on their masters, so they are more obedient and loyal than ordinary slaves. More and more aristocrats preferred to use eunuchs, and later it simply became an unwritten rule. If some large families use subordinates who are not eunuchs, they will be looked down upon by the guests. Eunuchs became a sought-after commodity, and even the number of prisoners of war was not enough. Gradually, the selection of eunuchs progressed from prisoners of war to occupied tribal people and even some underage boys. It was found that children who were castrated had a higher survival rate than adult men, making them easier to manage. Children became the main source of eunuchs, and some tribes focused on plundering women and boys.

The king is the nobleman of the nobles, and the people who serve him are, of course, eunuchs. In order to ensure the king's safety, his subordinates could not have been eunuchs who had just evolved from prisoners of war. Eunuchs not only have to serve the king, but also need to protect the king closely, so loyalty is the most important. The eunuchs used by the king were either eunuchs who were bought and trained since childhood, or eunuchs who voluntarily entered the palace. Not only will these men serve the king wholeheartedly, but they will also fight to protect their masters. As the king and the eunuch grew closer, the eunuch became the king's most trusted servant, and the king entrusted some personal matters to his eunuch. Not only can it be kept secret but also rest assured, the eunuch will also do his best to do things well.

In the ancient Spring and Autumn Period and the Warring States Period, there was an incident in Korea, which made the eunuchs completely become the king's cronies. Soon after King Han ascended the throne, his younger brother Jin Gongzi knew his brother's hobby and sent a beautiful woman. After King Han got this beauty, he sang almost every night, and he didn't even care about military affairs. His minion eunuchs Shun and An reminded King Han many times, but King Han just ignored their advice. At that time, eunuchs were the lowest people, with no name or status, not even a surname. One of them is called Shun and the other is An, which means that they should obey their masters and protect their safety. Shun and An secretly worried about their master, King Han, but as eunuchs, they were not allowed to leave the palace, let alone make friends with foreign ministers. Just when King Han handed over the military affairs to his younger brother Jin Gongzi in order to have fun with the beauties, Shun He'an began to be wary of Jin Gongzi and the beauties who had just been crowned queens. Soon after, their fears became true, and the queen and Kim Gongzi surrounded the palace in an attempt to force Queen Han to become the new king of Han. At that time, the guards of the palace were either bought by the queen or Jin Gongzi's people, and almost none of them were people from the king of Han. Shun and An acted separately, Shun tried to escape and ask for help, and An took people to protect King Han. When Shun crawled out of the palace that had been controlled by Prince Jin and the queen, An led more than thirty eunuchs to take up arms and stand in front of King Han, facing hundreds of samurai. Shun finally brought the rescuers to the palace, and at this time, only An was the only one of the more than thirty eunuchs who protected King Han, and An was also scarred. Jin Gongzi and the queen were finally killed by the rescuers, and King Han was finally safe. At this time, King Han knew that he was used by Jin Gongzi, and his beautiful queen turned out to be Jin Gongzi's woman. While remorseful to himself, King Han also began to realize that the eunuch was the most trustworthy person for him. Since then, Shun Hean has become the most trusted person of the King of Han, and he can almost walk sideways in the Korean Palace.

Gradually, eunuchs became not only the king's cronies, but also the king's cronies for his children. Even if the king no longer has family affection, his children are his own blood after all, and their descendants need to be protected and taught. The children's mothers were either uneducated or had no time to take care of the children, and the king was even more worried that the children's mothers would teach the children badly. So he thought of asking a teacher to teach his children, but it wasn't long before the king discovered a bigger problem. The officials who were chosen to be the children's teachers lost their neutrality and impartiality because they were too close to the children. In order to help the child become the next king, the officials even betrayed the king. The king did not dare to let the ministers get too close to his children, so that the already small family affection between them would disappear completely. You can't use ministers, you can't let the child's mother completely control the child, and all that is left is the eunuch. Unexpectedly, the eunuch was not only loyal to his master, but also devoted to taking care of the children and teaching the children. The king entrusted the task of raising the child to the eunuch who was at ease with him, and left the eunuch to teach the child as he wished. When the child grows up, of course, he also relies on the eunuch and believes in the eunuch, which becomes a reincarnation. Even a man of great talent like Qin Shi Huang could not avoid trusting eunuchs. He handed over his children to eunuchs to raise, and the one who disciplined Hu Hai, the second son of Qin Shi Huang, was later notorious Zhao Gao. Zhao Gao not only became Hu Hai's dependence, but also killed Qin Shi Huang's eldest son Fusu in order to make Hu Hai emperor. In the end, Qin Shi Huang died, and Zhao Gao insisted on making Qin Shi Huang's corpse stink in order to control the situation. In order to control Hu Hai and control the entire dynasty, Zhao Gao not only pointed to the deer as a horse but also forced Prime Minister Li Si to cooperate with him. Zhao Gao became the first eunuch in Chinese history to control the operation of the imperial court, and also created a situation in which eunuchs interfered in military affairs.