Everyone in the conference room couldn't see that Li De was worried, and as a think tank, they could only provide him with some suggestions and analysis.

Now that Li De has said that he wants to participate, there is no need to worry about whether to participate in the war, and the next thing they have to think about is how to participate and how to get the maximum benefits.

Li De's fathers-in-law are all veterans of the battlefield, and they are very good at arranging troops, especially the backer king is very experienced, and he knows the situation of the Li family soldiers and horses very well.

Don't look at the alternation of new recruits and veterans, the tactics and tactics used for the soldiers and horses of the Tang State are all in their mastery.

Just as the other party also understands the vanguard, if it is really against each other, then the competition is the command ability of the generals and the ability of the soldiers.

There's so much involved, and sometimes morale can make the difference between winning and losing.

Li De thinks a lot, what he wants is a world of long-term peace and stability, not the superficial peace that is exchanged for consumption of domestic demand.

Li Jiancheng improved the morale of the Li family's soldiers and horses after several battles, and the victory had a great impact on the soldiers, and also played a role in running in the recruits.

A large part of the soldiers and horses sent by the Tang State this time were newly recruited, and Li Jiancheng's command ability was also adapting along the way.

The situation against Tibet is different from that of the Central Plains, the battles on the banks of Tubo are mainly faced with cavalry, and the cavalry of various strengths in the Central Plains is not without more fortress walls.

It's not that easy to attack.

This is also because of the application of cement workshops in the defense of city walls, and many of the forces have strong fortresses in their stations, and they are all easy to defend and difficult to attack on the hills, otherwise they can survive by virtue of their existence.

There are really too few forces like Youzhou that do not have city walls, and if there are no defensive measures, it can only mean that the forces will not flow at all.

There are many reasons why Youzhou does not have a city wall, the most important one is that Youzhou is developing too fast and the city wall cannot meet the demand.

How many resources do you need to build a wall that can enclose a million people, and what is wrong with so many resources?

So there was no way to build the city walls.

Li Jiancheng had already collected a large number of information in the Central Plains before he set out on the expedition, and when he arrived here, the situation was even more complicated than expected.

Many forces are stationed in the mountains, and if you want to attack, you need to send a large number of scouts to find them, and the cities and counties in the Central Plains region have no less than a few thousand garrisons in each city and county, and even tens of thousands of people.

It is not easy to attack with the city wall as the backing, and the most troublesome thing is that they want to occupy it instead of plundering and then leave, which makes it unrealistic for 200,000 soldiers and horses to occupy the huge Central Plains.

Moreover, there are some cities and counties in the Central Plains region that are within the influence of Youzhou, and if they make a rash move without understanding, they will directly become the hostility of the Central Plains forces, and it is not impossible for them to unite to fight.

The forces on the Central Plains do not interfere with each other, because of the proximity to Youzhou, the commercial development is also faster, and the common ones here are caravans from the north and south.

If Li Jiancheng wants to make a move, he can only find the forces hidden in the mountains and forests first, and the forces involved in the city and county are complicated, and he does not want to affect the plan for the Central Plains because of insufficient information.

Li Shimin of Wagang City has been sending people to pay attention to the war in the Central Plains, and he has paid more attention to Li Jiancheng's actions.

"After thinking about it, how can we expand the territory of the Tang Kingdom."

Li Shimin was very dissatisfied with Li Jiancheng's approach.

With 200,000 good soldiers and horses in hand, since the strategy of the Tang State is expansion, what else is there to cause, do you still think about who can be provoked and who cannot be provoked.

However, Li Shimin understands the situation here better than Li Jiancheng, and his cautious attitude towards Li Jiancheng is still worthy of recognition.

Because the situation in the Central Plains region is very responsible, besides, they don't know what kind of reaction Youzhou will have.

It took Li Jiancheng a few days to understand the situation, and even received information from Taiyuan Mansion.

This was proposed by Li Yuan, and this expedition was an opportunity for the Tang State, so he used the forces on the side of Taiyuan Mansion to hand over the collected information to Li Jiancheng.

The intelligence contains information about many forces, and there are many regional areas.

After grasping these news, Li Jiancheng officially started with his soldiers and horses, but all the forces he encountered were their enemies.

Soon the situation in the Central Plains was chaotic.

It took Li Jiancheng half a month to occupy a large area, but as a result, there were very few forces to resist, and there were basically no battles.

There were a few times when there were fights, but there were still a few bandits encountered.

Although he did not encounter any decent enemies, the area under the influence of the Tang State really expanded.

"Big brother, it's not that the forces on the Central Plains are very strong, why haven't you encountered them for half a month."

Li Yuanji felt strange, he kept moving along the official road, and encountered several cities and counties, but there were not many garrisons, and the recovery was very smooth, and no one resisted.

"Keep going, be cautious, and the more you do that, the more you have a bad feeling."

Li Jiancheng was very cautious, but the 200,000 soldiers and horses he led were his confidence, and nothing could stop him from advancing for the position of the crown prince.

After the Tang State sent troops, the various forces in the Central Plains had already received the news, and there were many forces in the Central Plains, and the area was very large, and without the management of the Sui Imperial Court, the various cities and counties became separatist forces.

After wars and for many reasons, some cities and counties have long since become what they used to be, and people have moved frequently, and some cities and counties have even ceased to exist.

Although it has only been a few years, perhaps due to the influence of Youzhou, many forces do not pay attention to the city and county, because with the city and county, there is a goal.

In addition, many people have turned into caravans, and it is really difficult to find their walled city.

For the sake of interests, no one is willing to be cannon fodder for the Tang State, after all, the occupation of the Central Plains by the Tang State does not have much impact on these good forces.

Fundamentally, the Central Plains is a terra nullius land, and there are many forces, most of them exist in the form of caravans, and they are not anti-kings, and there is not so much demand for territory.

After learning that the Tang State had sent troops, many forces simply left here with people, and as a caravan, they had business wherever they went.

This led to Li Jiancheng being unable to find a force to establish his authority.

As for the lives of the people living here, there is no change, everyone is the same, they are ordinary peasants, and there is no threat to any strength.

Such a situation was not expected by several forces, and in a few years, the minds of many power leaders have changed.

It can be said that it is because the change of the situation in the world has provided them with another path.

As a result, Youzhou had to get involved, whether it was absolutely impossible, the Central Plains could not be occupied by the Tang State in vain.

The unexpected thing made Li De feel a sense of conspiracy, when did the Central Plains become a borderless land, and he didn't believe that those anti-kings really went to business.