My house was confiscated and I was exiled. I emptied the emperor's warehouse and fled.

Qin Junyi could understand Marquis Xuanping, but he did not agree.

In terms of hatred towards the emperor, his hatred was no less than that of Marquis Xuanping, but he was not satisfied with just killing the emperor. Instead, he overthrew the royal family and changed the dynasty.

Dongdu is far away from the capital, and the troops have to cross the vast hinterland of the Central Plains. If they attack Dongdu directly, they will surely be intercepted and resisted by the troops stationed in various parts of the Central Plains.

In this situation, if the army marches straight into the enemy's hinterland, it will be exhausted by the enemy's defense line before reaching the outside of the Eastern Capital.

In the end, Qin Junyi asked Marquis Xuanping and King Pingnan to cooperate with each other to first capture the major cities in the west, and then gradually advance eastwards, eroding the Central Plains region bit by bit.

He divided his troops into two groups, one to attack the northern barbarians and the other to occupy the northern territory, until they connected with the Youzhou base camp in the northeast, and then went south to attack the Central Plains.

*

The news that Qin Junyi proclaimed himself king reached Youzhou along with the military report.

The local civil and military officials were overjoyed and sent in invitations requesting to go to the Qin Mansion to congratulate.

Old Madam Qin was so happy that she burst into tears. She immediately ordered people to make a plaque that read "Prince Qin's Mansion" to replace the "Qin Mansion" plaque. She also called Su Yunwan and Qin Mu to discuss the matter of organizing a banquet to receive the guests.

Qin Mu, however, poured cold water on him: "The emperor's 100,000 guards are on their way and will arrive in Jizhou soon."

Su Yunwan knew the military situation and nodded in agreement: "The war is imminent, so we should fight the enemy first."

Upon hearing that there was another war, the old lady hurriedly inquired about the preparations.

Since the matter was confidential, Qin Mu did not elaborate, only saying that he would do his best to guard the jurisdiction.

The old lady believed that with her eldest grandson's ability, he would definitely have a backup plan to deal with everything, so she was not too worried.

The Qin family's deprived title of king was returned, and the old lady who always liked to be lively made a compromise: "Then let's celebrate in the mansion with our clansmen."

Seeing that Su Yunwan didn't care, Qin Mu asked the old lady to ask others to take charge of it so as not to involve Su Yunwan.

In recent days, in order to deal with the 100,000-strong imperial army heading north to attack, Su Yunwan compiled the mathematics, martial arts, and chemistry knowledge in his memory from easy to difficult into a book, and passed it to Qin Mu, asking him to improve the weapons.

Qin Mu was deeply shocked when he saw these profound and mysterious contents. He immediately transferred part of his official duties to two deputy generals and plunged into the ocean of knowledge, enjoying himself.

After mastering the theoretical knowledge, he applied it to other situations and integrated it into his own thinking. He not only improved cold weapons such as crossbows, knives, and axes, but also devoted himself to the research of gunpowder weapons and achieved initial results.

Su Yunwan didn't want to bring advanced military development to this world, so as not to cause a large-scale war and destroy the original order of the human world.

However, the turbulent situation in recent years has made her realize that even without hot weapons, conflicts and killings are everywhere.

Only by ending war with war can we quell the turmoil and restore peace to the world.

The stronger our military power is, the more we can protect the lives of soldiers on the front line and speed up the peace process as much as possible.

However, she did not want to "force the issue", so Su Yunwan did not participate in either the improvement of cold weapons or the research and development of hot weapons. She only explained the theoretical knowledge and the appearance and styles of basic hot weapons in later generations.

As for how far they can go, it depends on the strength of Qin Mu and other people who were born and raised in this world.

In this way, the development of science and technology will not deviate too much from the historical process and lose control and go to destruction.

Su Yunwan solemnly emphasized one point: "The danger posed by hot weapons is not only to the opponent, but its core technology must be firmly in our own hands. Deterrence is the main purpose, and use it with caution."

Qin Mu naturally agreed.

He knew the interests involved and was not one to trust others easily, so he completed the entire gunpowder research process by himself.

Even though there were multiple explosions, which he had to rely on his extraordinary martial arts skills to avoid, his enthusiasm remained unabated.

Finally, on the day Qin Junyi became king, the first micro bomb came out.

As an advanced martial artist, Qin Mu was not satisfied with its power and continued to study it in depth.

During this period of time, Su Yunwan had to edit books and explain and answer his questions, so she had no free time. Qin Mu didn't want her to be bothered by trivial matters.

The old lady agreed immediately and sent a nanny to prepare a banquet for the whole family.

However, none of the three of them knew that a sudden storm was about to come.