Seeing Father Hu turn around and leave, Luo Cheng smiled with relief.

The construction of the ship was the arrangement he had expected, and the appearance of Father Hu could be said to be just right. Not only can you profit for yourself, but you can also take this opportunity to explore the situation along the way.

Although Luo Cheng knows something, it is not in the details after all, it is just a rough idea. If you really want to do something outside, you must first find out the situation before you can be safe.

Of course, for Luo Cheng, his main focus is on today. Even Li Yuan didn't solve it, so he naturally wouldn't easily send troops and cause trouble for himself.

However, Luo Cheng was not worried, because in his opinion, Li Yuan could not hold out for long. Don't look at him as the emperor now, in fact, it is already the afterglow before the curtain ends.

In his own planning, Luo Cheng set the time for entering Daxing in April. At that time, the army swept in, annihilating Li Yuan in one fell swoop, and at the worst of all, Daxing would be taken.

As long as Daxing is broken, the problems behind it can naturally be solved, how can a mere lost dog stir up any storms, for his own army, Luo Cheng still has this confidence.

The matter of sending troops has already been ordered step by step, there is no need for Luo Cheng to worry about it at all, and there is no need for Luo Cheng to think about anything now, there is still a long time in the period, which is enough for Luo Cheng to do something else.

Since getting married, Luo Cheng has basically been running around outside except for being tired of being crooked with Xinyue. His character is like this, even if he returns to Beiping, he can't be idle.

Fortunately, Xin Yue'e can understand Luo Cheng, although she doesn't spend much time with her, she has no reason at all, and she behaves very virtuously, which makes Luo Yi and Luo's mother quite satisfied.

During this time, Luo Cheng was indeed busy.

But he's not aimlessly busy, and in fact everything he does is purposeful.

Just like this time, he asked Hu's father to find his cronies and craftsmen and gather them in a secret place. And saltpeter and other raw materials were brought from all directions, and he was preparing to make gunpowder, which was his weapon for a fatal blow.

Luo Cheng had long known the formula of gunpowder, after all, the power of black powder was really not worth mentioning in later generations. However, in today's world, it has unimaginable destructive power, enough to form a deterrent.

There is no doubt about the role of gunpowder, in fact, Luo Cheng had the opportunity to get gunpowder out before, but he has always had other considerations, and the matter has been delayed until today.

For Luo Cheng, exposing the secret weapon of gunpowder too early is actually disadvantageous, because after attracting the attention of others, it will not be able to exert miraculous effects, and even the enemy cannot imitate it.

When he was in Yangzhou, Luo Cheng was forced to make some simple gunpowder temporarily. But this matter has made Yang Guang and Yang Lin take the blame, and it will be difficult for others to associate with Luo Cheng.

This gunpowder formula is said to be secret, but Yang Guang can know it, who can be sure that others don't know. Hiding it like this is the best choice before.

But today, the major forces in the world have basically been purged, and the rest are either obedient to Yan Yun or Li Yuan's family, and it can be said that the real decisive battle is coming.

In this world, Yan Yun's biggest enemy is Li Tang, which is undoubtedly certain. And when the battle was approaching, Luo Cheng made some preparations in advance, which was understandable.

In this secret workshop, Luo Cheng took Lou Jicheng to inspect, watching the craftsman operate step by step, he nodded slightly, there is no problem with the manufacture of gunpowder, but there may be areas that can be improved.

If, like last time, you make a rudimentary explosive pack, although it is not impossible, it is still too inefficient. As ammunition, it must be improved and strengthened.

With Luo Cheng's plan, people built catapults and threw explosives made of gunpowder up the castle towers, which could not only deter but also cause considerable damage.

In fact, the idea is very simple, after all, the catapult has existed for a long time, and he has to solve the problem of gunpowder. As long as its stability and destructive power can be guaranteed, it is not a problem.

At the very least, this gunpowder can't explode when thrown, if you accidentally hurt yourself before you touch the enemy, this is not a good sign, Luo Cheng doesn't want to see it.

Of course, these have nothing to do with the formula that Luo Cheng knows, the power of gunpowder is limited, to a certain extent, it is related to the purity of the raw materials, the technology of this era cannot be supported, and this is something that Luo Cheng cannot change.

Although he also considered the development of science and technology, the current conditions obviously do not allow it. At the very least, he has to wait for the situation in the world to stabilize before he can be distracted by this.

It is because Luo Cheng can only start from the use of gunpowder now, and take different wrapping methods, which can indeed achieve different results, which can be seen in the experiment.

Behind the workshop, there was a large open space specially prepared by Hu's father, which was blocked by fences all around, and even Luo Cheng sent a large army to garrison the surroundings, which was very important, even Luo Cheng could not take it lightly.

At the very beginning, when the craftsmen heard the thunderous explosion, their faces were full of confusion, thinking that it was the gods who had descended into the world, and their hearts were terrified, until they knew that it was the effect of gunpowder.

After many experiments since then, the craftsman has long been accustomed to this, and although it is still a little scary to face the explosion, it is not as frightened as it was at the beginning, and can be treated safely.

With the improvement of all parties, the explosives package has met Luo Cheng's requirements, although it is still incomparable to all kinds of new explosives in later generations, but it is enough to achieve Luo Cheng's strategic goals

This improved explosive package is much more stable than before, and can be transported over long distances, directly from Beiping to Daxing, and give Li Yuan a wave of meteor showers.

Luo Cheng believed that Li Yuan would inevitably be moved to tears after seeing the gift he had carefully prepared for him, and then logically withdrew from Daxing City and fell into defeat completely.

In fact, Li Yuanba's combat power is indeed not weak, and it is not easy for Luo Cheng to separate the victory or defeat with him. It is better to take advantage of the convenience of gunpowder to directly take down Daxing, which will be difficult for Li Yuan to resist.

Such a powerful offensive is what Luo Cheng wants to see, everything before is just an appearance and a temptation, if Li Yuan has no other backhand, he should be ready to be destroyed!

Anyway, after solving the problem, Luo Cheng ordered the craftsmen to make a large number of explosives packs. Whether you can use it or not, all in all, be prepared.

In this era dominated by manpower, the emergence of black technology can always achieve unexpected results. There was no need for a short battle, and a direct round of air strikes made Li Yuan fall into despair.

If Li Yuan had prepared in advance, maybe things would not be so simple, but when people faced something sudden, they would always seem extremely flustered. Luo Cheng is very sure that in this regard, Li Yuan is no different from others.