In short, the cooperation went on "happily".

Naturally, Luo Ming will not only hope for this cooperation - in any case, the other party is not a partner who has worked together for a long time and has established deep mutual trust.

In case of an accident, there is no guarantee that there will be no accidents.

So, Luo Ming also quietly arranged experiments during this period.

He had a small earthen wall built in the middle of nowhere, and then used it to experiment with several siege methods he had in mind.

In fact, throughout the history of the two worlds, the siege method is not very varied, and for Luo Ming now, there are two more practical ones-

Giant cannon method and blasting method.

The thickness of the earthen wall on the opposite side is only more than two meters, and if Luo Ming casts a heavy cannon of thousands of pounds and pulls it to a distance of 100 meters to bombard, it will definitely not take a day to make this defense line into a sieve.

Of course, it is better to use this trick as little as possible, and try not to expose it if you can.

Lockin's artillery has shown a lot of value, and if it is now known that it can be simply and crudely bigger and have the ability to siege cities, there will definitely be more people eyeing it, and even if Lockin becomes the defender of Van Shei, it will be a headache to deal with so many pretenders.

Moreover, the difficulty of casting large-caliber siege guns is not small, and I am afraid that it will not be completed in a few days.

The other method of blasting is much simpler and not easy to covet.

To put it simply, it is to dig a pit under the city wall, bury enough gunpowder in it, and blow that section of the wall open.

If you want to deal with a castle fortress, the best way is to dig a pit in the distance and dig a whole tunnel under the city walls, which can take a long time, or you can be discovered by the enemy along the way and then lose all your efforts.

But it's much easier now.

I saw a group of soldiers carrying three huge wooden tools like tables in front and back, moving forward.

The legs of the "table" were reinforced with steel, and there were wheels underneath, and there was not only a layer of hardwood, but also a layer of iron sheets, a layer of sandbags on the outside, and a thick layer of soaked cloth on the top.

Luo Ming named it the Earth Tank, and from this name, it can also be seen that he has high hopes for it.

The dirt tank soon approached the dirt wall, and the diggers hiding underneath were about to get to work - and before that, several of the same casters were chanting spells together, casting a sharp spell on the digger's tools, and then placing a softening spell on the dirt wall.

The diggers quickly got into action, and although the earthen wall itself was tamped and reinforced with some planks and stones, there was actually one swordsman and five high-level swordsmen in the excavation team, and they could overcome this problem with their fighting spirit.

Then, in about ten minutes, they dug a pit about a meter deep. In fact, they were able to completely dig through the earthen wall in this way, but the passage was too small to accommodate a few people to pass through, and it was of little use.

Then, the prepared gunpowder was sent deep into the tunnel, and they filled back as much soil as they had just dug up, and finally the caster put another spell to temporarily strengthen the soil structure, and the process was completed.

It is worth mentioning that the gunpowder was tightly sealed, the innermost part was wrapped in oiled paper with three layers of inner and outer three layers, and then stuffed into the crockpot, the mouth of the crockpot was sealed with wax, and then the outside of the crockpot was wrapped with thick cloth several times, and oil was poured to further seal.

After several years of practical testing, Luo Ming has learned that black powder and ordinary "explosives" are not the same thing, it must be burned in a small and confined space, producing a large amount of high-temperature gas, accumulating huge air pressure, in order to reflect the explosive effect.

If the seal is too poor, it will become a normal combustion, or it will continue to spray hot gas until the gunpowder is burned out.

He's also trying to make other types of explosives, but so far he hasn't been able to do so, but that's off topic.

Lockin put aside the other explosives, let the three earthen tanks quickly evacuate, and then focused on the section of the earthen wall.

"Three, two, one......!"

He put Cang Yan in a dormant state in those powder jars, and now that Cang Yan received his order, he began to burn violently, burning through the layer of paper wrapped in it at once, and then came into contact with gunpowder.

After a few seconds of silence, the earthen wall made a violent shocking sound, and several large cracks appeared on it, collapsing and spewing out hot gas mixed with sand.

By the time the dust cleared, a section of the earthen wall about five meters long had completely collapsed, and most of them fell into the trenches on the front and back sides of the earthen wall, filling in a lot of the trenches by the way, and the remains of the earthen wall itself were only less than half a meter high, which was simply the height that people could easily walk through with a slight lift of their feet.

Such a gap cannot be plugged immediately, as long as you fire two rounds of artillery into it, and then let the soldiers rush in, the situation can be quickly opened.

Although Lomin hopes that Vytautas can maintain a good relationship with him, instead of hoping for strangers, it is better to have the means to break the game in any situation.

With this move, he took a step from being invincible to the point where he could almost be called a "sure victory".

At the time of receiving the news, the clone who had taken over his main body and was on duty in the castle of Mount Carlo was distributing plans to the nobles.

Although in the secret letter to Vytautas, he said that those nobles who were willing to go out to carry out tandem missions wanted to show their loyalty and meritorious service in front of him, in fact, although there were such nobles, there were also those who were not so reluctant.

But Luo Ming's reasons are also very serious, on the one hand, they feel that their role is very important, without a nobleman like them, it is difficult to win the trust of other nobles, and on the other hand, it makes them afraid of being isolated, after all, they will be laughed at for the rest of their lives if they run away alone when everyone goes on a dangerous mission.

In short, except for direct persecution, he used all means, and finally made basically all the nobles dispatch.

Of course, this sortie is also in batches, and Luo Ming kindly reminded that if all the people are crowded together, it will be easier to be exposed.

While they were thanking Luo Ming for thinking so much about them, they didn't know that Luo Ming had already treated some people as dead.

Of course, not all, not even most of them.

Luo Ming's subordinates did not have obvious thorns, but there were also a few people who looked out of place and would complain in private, and even those who were disobedient to the yang and the yin, were gradually screened out by him.

After all this time, they haven't fully adapted to being a qualified vassal, so Luo Ming doesn't mind cleaning up a little.

If you don't sweep the garbage, you won't run away on its own.