The Young and Vigorous Eighth Prince

Mercury fulminate is the main component of gunpowder primer. Whether Jiang Fan's bolt-action rifle can be mass-produced depends on it.

Of course, the mass production of bolt-action rifles still lacks the most important manufacturing tool, the mechanical lathe. In order to manufacture this thing, it would be best to successfully develop a steam engine.

The primer can be mass-produced, but there are still many processes that need to be solved for the rifle body, and these processes require steam machine tools to solve them.

Of course, the invention of gunpowder primer brought about a qualitative leap in the development of rifles.

Su Yuqing is indeed a genius in this area. She completed the task assigned to her by Jiang Fan perfectly.

"I don't want his reward!" Su Yuqing curled her lips, looking proud.

"Then I will let Brother Fan take you as his concubine!" Chu Yan'er looked at Su Yuqing teasingly after hearing this.

As soon as she said this, Su Yuqing's face turned red with shame.

"You silly girl, you teased your sister..." She pretended to tickle Chu Yan'er's armpit.

"Sister Su, what does it mean to take you as my concubine?!" The little girl Jiang Baoer looked at Su Yuqing and Chu Yaner and asked with a puzzled look on her face.

The two who were playing around were stunned when they heard this. Su Yuqing blushed with shame and quickly pinched the little girl's fat face, saying angrily: "You little girl, you are making fun of me too!"

"No, Sister Su, Baoer really doesn't know what it means to take you as a concubine?!" Upon hearing this, the little girl looked at Su Yuqing with a confused face.

Her cute expression stunned Chu Yan'er and Su Yuqing. They looked at each other and were immediately at a loss whether to laugh or cry.

On the other side, in the imperial palace, Emperor Yan saw the expedited documents sent back, and his face was filled with uncontrollable excitement and excitement. Ever since the fourth prince's rebellion, he has lost a lot of weight.

The death of three sons in a row and the disappearance of another son was a huge blow to him, from which he has not yet recovered.

The news Jiang Fan sent back made him happy. He was glad for his choice. His son would always give him unexpected surprises wherever he went.

The issue of Beimeng has been completely resolved. At least during the reign of the Queen of Beimeng, he will not have to worry about Beimeng using military force against Dayan again.

However, his biggest headache now is the trouble in the other three parts of Dayan. The Japanese pirates along the coast often invade the border and are growing stronger.

Even if he sent troops to encircle and suppress the Japanese pirates, the Japanese pirates would just hide in the sea and he would be unable to do anything to them.

The threat of Japanese pirates was not what worried him most. What worried him most was the affairs of the tribes in South Vietnam. Just over a month after the fourth prince rebelled, South Vietnam completely rebelled.

They killed the officials sent by the imperial court to supervise South Vietnam, and the tribes united to establish the independent South Vietnam Kingdom, except that some tribes in South Vietnam had not yet completely rebelled.

At least 70% of the Nanyue tribes have joined the Nanyue Kingdom. The current king of Nanyue calls himself the Holy King of Nanyue and has more than 200,000 soldiers.

The 100,000 Wujing troops stationed in South Vietnam had several battles with the South Vietnamese army, and never gained an advantage.

The terrain in South Vietnam is really complicated. If the South Vietnamese barbarians hide in the mountains, if the army chases them, they will be sniped and killed one by one in the jungle.

Now, he could only sigh at the rebellion of Nanyue. If he allowed Nanyue to grow stronger, not only would Dayan lose control of Nanyue, but it would also leave a big hidden danger for himself.

The Emperor of Yan now urgently needs Jiang Fan to return to resolve the issue of South Vietnam, or perhaps only Jiang Fan has that ability.

Moreover, apart from the troubles in Nanyue, the Dashi Dynasty did not retreat because of the defeat in Northern Mongolia this time. Instead, it was on the offensive.

Perhaps it was because Dayan was facing troubles from Japanese pirates along the coast and the danger from Nanyue, and they wanted to take advantage of the opportunity, or even wanted to take the opportunity to destroy Dayan's Taoist orthodoxy and national destiny.

Emperor Yan was hit hard, and now he felt that he was really alone. He trusted his son Jiang Fan even more.

The only thing worth celebrating during these boring days was that both Concubine Ning and Concubine Su were pregnant.

After being cured by Jiang Fan, Concubine Ning's health improved greatly and she became pregnant four months ago. Concubine Su also became pregnant two months ago.

The royal family has added new members, Concubine Su and Concubine Ning, how could the Emperor Yan not be happy? If it weren't for this good news supporting the Emperor Yan, he might have fallen ill and never recovered!

In addition to Emperor Yan who missed Jiang Fan, Concubine Su and Jiang Xing in the palace also missed Jiang Fan.

Concubine Ning also missed her new son very much. After she knew she was pregnant, she burst into tears of gratitude towards Jiang Fan.

Not only her, but the entire Ning family was grateful to Jiang Fan. After all, Concubine Ning had never been pregnant since she lost the twins, and she was depressed for a long time.

Moreover, this time the baby should be twins again.

Just as everyone was longing for Jiang Fan to return soon, in a mansion somewhere in Fang Yuan Mansion adjacent to Weizhou Pass, the Sixth Prince Jiang Zheng was sitting in his study.

In front of him was another of his confidants. The previous confidant had died in the battle of the palace.

This confidant respectfully reported the news to Jiang Zheng.

When Jiang Zheng heard that Jiang Fan helped Dora Yue'er regain the throne and that Bei and Bei Meng reached an alliance, his eyes were full of anger and coldness, his fists clenched, and his body trembled slightly.

Jiang Zheng was obviously very angry at this time, but he still tried his best to suppress the anger in his heart.

He never imagined that Jiang Fan not only defeated the Northern Mongolian army, but also dared to break into the Northern Mongolian grassland and directly helped Dora Yue'er regain the throne.

He couldn't believe how Jiang Fan could complete such an impossible task. It was really because Dora Yue'er had no one to use. Jiang Fan didn't have the courage to turn the tables in such a situation.

But the facts were before his eyes, and he couldn't help but believe it. Not only did he lose to Jiang Fan, he lost completely.

"When do you think Jiang Fan can return to the capital?" Jiang Zheng looked at his trusted subordinate and said coldly.

"Your Highness, Jiang Fan should be able to return to the capital in about a month, around mid-August!" the confidant replied quickly.

Jiang Zheng frowned when he heard that, and a cold light flashed in his eyes as he thought about it.

"Mid-August? There should be a big commotion in South Vietnam! By then, my father will definitely send him to deal with the South Vietnamese issue. I hope he can reach South Vietnam alive."

"However, when he arrives in Nanyue, it will be time for the Great Western Dynasty to take action! Have you contacted the Third Prince of the Great Western Dynasty?"

"Your Highness, we have already made contact and are waiting for your support at any time. By then, as long as we break through Weizhou Pass, we will go all the way south and head straight for the capital. Your Highness will be able to take back the throne in no time!"

The confidant said hurriedly. At this point, the confidant frowned and suddenly said: "But, Your Highness, do you really believe that His Highness the Third Prince of Daxi will keep his promise!"

Jiang Zheng heard this with a hint of sarcasm on his face.

"Not keeping his word? I really hope he doesn't keep his word. If he dares to break his word, I will make him regret it!"