Zhu Di raised troops to seize the throne as a vassal king, and was supported by eunuchs, and there were many opposition parties after he ascended the throne, so the eunuchs were reused, and they had "the power to send envoys, levy special forces, supervise the army, divide towns, and assassinate subjects and hide things". Huang Yan, as a eunuch trusted by Zhu Di, has been a eunuch since the second year of Yongle, and has been ordered to go with the commanders Gao De, Zuo Tongzheng and Zhao Juren, to thank King Li Fangyuan (Taizong of Joseon) for congratulating Ming Chengzu on his accession to the throne, giving him a new edict and seal, re-naming him the king of Joseon, and asking him to repatriate the subordinates of Emperor Jianwen, who fled to Korea. This is the first diplomatic activity after Ming Chengzu seized the throne, and it is of great significance. But Huang Yan's personal appearance is "rude", caring about gifts, when he gave him two horses, he actually asked to replace one of them that he thought was not good, which was in stark contrast to Zhao Juren's adherence to Confucian etiquette and repeated refusal to accept gifts, leaving a bad impression on the DPRK, but Zhu Di favored him, and in October of the same year, he asked him to envoy to the court again, accompanied by several civilian envoys. This time it was nominally to give the crown clothes and books to the king of Taishang (Joseon Taizu), the king, the princess and the prince, but in fact it was to ask for the eunuch (fire) and Emperor Jianwen had ordered, and the horse that had not been handed over in North Korea, only two years after returning to the Ming Dynasty, four years after Yongle, Huang Yan, who was the eunuch of the ceremonial eunuch, took Han Timur, Qiyuan and several other Korean eunuchs to envoy the court, and was ordered to obtain the bronze Buddha statue of Jeju Fahua Temple. Huang Yan and others want to strengthen the king of the country to greet in person, and bow to the Buddha statue five times and three times, in order to take the opportunity to insult the king, and to offer three bronze Buddha statues, they must use fifteen Buddha shrines, respectively, equipped with Buddha seats, firelight, lotus platforms, and seats, and peonies, peonies, yellow sunflowers and other strange flowers are planted in the niches with soil. 1,000 leaves of board for making cabinets, 600 catties of iron, and 700 catties of hemp. The three niches of the Buddha statue of the firelight, each of which is about seven feet high, have 28,000 pieces of white paper, 200 catties of cotton, and thousands of bearers. Every time I arrived at the building, the old hall was simple, and a spacious new hall was built next to the hall. "Everything you ask for, everything you want. If they are not satisfied, they will be whipped and humiliated to obey orders, and the prefectures and counties will be tired of supplying and paying." This has aroused the dissatisfaction of the whole country in North Korea. King Taizong of North Korea said angrily: "Why did Huang Yan insult me to this point!" Zhu Di didn't know about this, only a year later, in May of the fifth year of Yongle, Huang Yan made North Korea again, asking for the treasure relics of the former Joseon Taizu to return to Beijing (Nanjing) for worship. Taking advantage of this opportunity, Huang Yan took the statue of Guanyin when he passed by Gwangri Temple in Kaesong, and forcibly sold smuggled goods in Yiju, which made the officials accompanying Eun very dissatisfied.

In the first month of the sixth year of Yongle, the son of the Joseon dynasty, Li Zhen, went to Beijing to congratulate him on his birthday, and Huang Yan was ordered to escort him back to China. This time, Huang Yan passed on the will of Chengzu to "go to the Korean country and the king and say that there are well-born women, and select a few in the future", so that the Korean people chose to pay tribute. Therefore, North Korea banned Chinese and foreign marriages, and set up a special agency for the selection of virgins, which was personally selected by Huang Yan and other eunuchs of the Ming Dynasty, and obtained five people including the Quan family (that is, Concubine Quan Xian), and in November, they were codenamed "pure white thick paper" to cover the eyes and ears of the courtiers and send them to the harem. This matter was even rewarded by Zhu Di, and Huang Yan was more and more reused.

In the seventh year of Yongle, Huang Yan and the Korean eunuchs Cheng Haishou and Fengyu Yin Feng once again made the court choose a virgin, he said: "Last year, every woman you entered and went here was fat, numb, and short, not very good. Just look at the respect of King Er, the concubine of the concubine, the beauty of the beauty, and the Zhaorong of Zhaorong, all of them have been sealed. Now the king has found two more women, and only one younger, and more to come. At the same time, he asked for 10,000 horses to prepare for the Ming Dynasty's expedition to the desert next year, Huang Yan sent 11 envoys to North Korea before and after, and did a lot of private affairs for Ming Chengzu that were not suitable for appointing courtiers, such as choosing virgins, asking for fresh fish, asking for Buddha statues, etc., and he left a very bad impression on North Korea, that is, an arrogant, rude, greedy and shameless villain, just because he was afraid of the Ming court and the tradition of the great doctrine, and was afraid that "with the anger of one day, the trouble of a hundred years", so he did not dare to expose it, so that Huang Yan's crime was not known to the world.

After returning to the Ming Dynasty, he took advantage of Zhu Di's trust to launch a huge conspiracy against Emperor Zhu Di and Prince Zhu Gaochi in the 21st year of Yongle. In May of this year, Ming Chengzu Zhu Di occasionally felt unwell and did not go to court for a few days. Zhu Gaosui, the king of Zhao, who had been enduring for a long time, thought that the time had come to seize the throne, so he contacted Huang Yan and other cronies to prepare for action. At this time, the crown prince dismissed the eunuchs, and Huang Yan and another eunuch, Jiang Bao, were often reprimanded by the crown prince. Huang Yan was originally a henchman of King Zhao, so he framed the prince even harder. On the one hand, he took advantage of the opportunity of being Zhu Di's confidant eunuch to intensify his slanderous rumors and slander the crown prince, and on the other hand, he spread rumors in the outer court, claiming that Zhu Di did not like the prince and intended to pass on the throne to King Zhao. King Zhao also colluded with Gao Yizheng, the Houtun guard of Xingzhou, to create a false edict, conspired to let the eunuch Yang Qing poison Zhu Di's medicine, poisoned Zhu Di and then took charge of the palace Fu Bao, issued a false edict, abolished the prince, and established himself as the emperor. But this matter failed due to Wang Yu's whistleblowing, and Zhu Di personally interrogated Zhu Gaosui at Youshunmen in the imperial city, and Zhu Gaosui was too frightened to speak. Later, because of the prince Zhu Gaochi's various justifications, Zhu Di finally decided to let Zhu Gaosui go, but Gao Yizheng and others were all executed, but Huang Yan was not seen, which is strange.

A year later, Ming Chengzu Zhu Di died in Yumuchuan, and the crown prince Zhu Gaochi ascended the throne for Mingrenzong, and sent people to search for the heinous Huang Yan many times, but there was no trace of him, some people said that he fled back to North Korea, some people said that he was killed, but they did not expect that he had been hiding in the Han Palace.

Huang Yan didn't care about everyone's surprised eyes, as early as the twenty-first year of Yongle, he had a lot of contact with the King of Han, and he helped the King of Han a lot, so Zhu Gaochu respected him very much, Yongle twenty-one years, everyone was killed but there was no trace of him, in fact, he hid in the fief of the King of Han early in the morning, and escaped the pursuit of the imperial court.

"Oh, is it, Gonggong Huang hurry up?" Zhu Gaoxu was really a little excited, he is going to raise troops now, there are a lot of archers and arrows, but this gunpowder is pitiful, and he has been hesitant to do it, if Pan Tianshi really refines the gunpowder, it is enough to solve the problem of gunpowder for his own soldiers and horses, with gunpowder, and then configure some firearms, he may not be afraid of the divine machine battalion of the imperial court!

Huang Yan responded and said: "It is recorded in the book that in the early years of the Sui Dynasty, a person named Du Chunzi went to visit an old alchemist. Stayed there that night.

In the middle of the night, Du Chunzi woke up from a dream and saw "purple smoke penetrating the house" in the alchemy furnace, and the house immediately burned. This may be the alchemist's negligence in dispensing flammable drugs and causing the fire. There is also an alchemy book called "The Essentials of the True Yuan Wonderful Path" that also talks about the use of sulfur, saltpeter, realgar and honey to make alchemy and catch fire, and the fire burned people's faces and hands, and even went straight to the roof, burning the house. The book admonishes alchemists to prevent such accidents from happening.

This shows that the alchemists of the Tang Dynasty had mastered a very important experience, that is, sulfur, nitrate, and carbon can constitute an extremely flammable medicine, which is called "fire medicine", that is, gunpowder. “

"The fire medicine?" Pan Tianshi was taken aback, and said in his heart: "I just tinkered with it a few times, and I actually made gunpowder, fortunately, the poor Dao has a great fate, otherwise this gunpowder would not have blown me to pieces?"

"It turned out to be gunpowder, no wonder this is so powerful?" Zhu Gaoxu squinted at the collapsed houses in the courtyard and muttered to himself.

"Hey, I forgot, alchemy has been refined into gunpowder, what about the prince's elixir?" Pan Tianshi remembered that his actions were to refine the elixir for the prince, and now the gunpowder has blown all the medicinal materials clean, and the elixir has been wiped out together.

"Haha, Heavenly Master doesn't have to be depressed?" Zhu Gaoxu laughed loudly and said: "It's good to blow it up, there is no pill, there is gunpowder, this time the Heavenly Master has made a great contribution to this king, and when he becomes a great event as the king of Japan, he must not forget the sacrifice of the Heavenly Master today?"

Pan Tianshi's refining of the pill was originally to please Zhu Gaoxu, but now although he failed to refine the pill, he was so praised by the King of Han, and he was very happy, and he hurriedly said: "Thank you for your understanding, Poor Dao is really ashamed of his love for the prince?"

Zhu Gaoxu waved his hand and said, "It's okay, it's okay, from today on, the Heavenly Master doesn't need to refine the pill, just refine the gunpowder for this king according to today's recipe?"

"Refining gunpowder?" Pan Tianshi remembered today's scene, a trace of fear flashed in his eyes, hesitated for a moment, and said: "The prince has a life, and the poor Dao must obey it, but the prince also saw it, today's explosion, the poor Dao can be injured a lot, this gunpowder ——?"

Zhu Gaoxu said: "The Heavenly Master is injured, and he can't refine the pill, the Heavenly Master only needs to remember that recipe, turn around and tell the disciples of the Heavenly Master, and let the two of them refine it instead of your old man, if there are not enough people, how about this king can transfer some manpower from the guards and the inner servants to be dispatched by the Heavenly Master?"

When Pan Tianshi heard that he didn't have to go into battle in person, he breathed a sigh of relief, and got up with two strong sounds, and got up from the bed, and the two apprentices on the left and the right hurriedly supported him when they saw this, reluctantly got off the bed, and walked two steps, except for some limping, there was nothing wrong with it, and walked to Zhu Gaoxu and saluted: "Thank you for your love!"

Zhu Gaochu waved his hand, and was about to say something complimentary, but at this moment, a guard hurriedly walked in, and muttered in his ear for a while.

The guard answered, and hurried away.

"Lord Wang——?" Huang Yan glanced at Zhu Gaoxu cautiously and called softly.

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The third update, not much to say, please support more, today's move, our history is a small minority, there is not a lot of silver, our position is here, please give us a force!