The first batch of rockets was quickly ready, and Xue Li immediately found a group of archers to test.

Although the rocket is ready, it mainly depends on whether the archers can control him, and if the finished archers can't use it, then they are also busy in vain.

However, the results of the experiment were quite satisfactory to Xue Li, although the archers did not master the aim in the first round, and many of the rockets missed or were too close, but the experienced archers were much better in the second round of shooting.

This means that tying a powder bullet to the back of the arrow does not have a particularly large effect on the arrow, as long as the archers get used to it.

However, the range will definitely be affected by the point, and in the second round of shooting, most of the rockets have only sixty percent of the range of arrows, but Xue Li is already very satisfied.

This is only the second round of shooting, they still have room for improvement, just now there are still some people who shoot seven or eighty percent of the range of arrows, although that is only a very few, but after all, you are also hope, is the direction of their efforts.

Since the method of rockets was feasible and the test was basically passed, Xue Li immediately ordered the army to start manufacturing rockets in large quantities, and at the same time transported a large number of gunpowder shells from the territory of Datang.

Rockets need a lot of gunpowder shells, and they will probably have to fight a war of attrition next, and if they don't have a lot of gunpowder shells, their rocket tactics won't work.

Now the Tang Army is continuing to experiment, so that the archers of the Tang Army are familiar with the use of rockets. On the other side, a large number of rockets began to be made for use in sieges.

Now that there are not so many rockets for the archers to use, Xue Li asked the archers to tie a small stone with the same weight as the gunpowder bullet at the end of the arrow, so that an arrow is almost like a rocket, so that the soldiers can become familiar with the use of this rocket as soon as possible without wasting gunpowder bullets.

In order to make rockets, the Tang army camp is now in full swing, and there is no time to attack the capital of the Goguryeo people, and they continue to surround and besiege without attacking.

Although the Goguryeo people didn't know what tricks the Tang army was doing, they knew that the more they dragged on, the better it would be for them.

After a long time, the Tang army's supplies and other aspects could not keep up, and then they had to withdraw their troops.

And the longer the time drags on, the more irritated the Goguryeo people will be, and no one wants to always have such a strong army staying in their own land, and there will definitely be many Goguryeo people who will voluntarily rise up against the Tang army.

If the Tang army does not attack, the Goguryeo people will stick to it without fighting and continue to consume you.

It's a pity that the Goguryeo people don't know that in a few days, they won't have such a leisurely life.

Three days later, Xue Li ordered the first batch of rockets made by the Tang army to be made, and a total of 80,000 arrows tied to gunpowder shells were gently placed in the Tang army's barracks.

The next day, Xue Li couldn't wait to test the power of these rockets and see what kind of damage they could bring to the capital of the Goguryeo people.

Now they have 80,000 rockets, and the soldiers are still making arrows and rockets, and gunpowder shells are constantly being transported here, and they can still produce a lot of rockets every day.

"Give it a try, I can't wait."

Xue Li thought about it and immediately gave the order to attack the next day.

Of course, he could only give orders to his vanguard, but he could ask for help from other generals.

In the case of a long-term attack without results, those Tang generals were also anxious one by one, and now Xue Li wanted to take the initiative to attack, then they must have raised their hands and feet in favor, and it was natural to send troops to help.

And after a period of calm, the capital city of Goguryeo was finally about to be attacked by the Tang army again.

Early in the morning, the Goguryeo people saw a large number of Tang troops assembled at the head of the city, and they knew that the Tang army would definitely make a big move today.

Countless Goguryeo soldiers shouted and rushed to the city, the Tang army outside the city moved a little big, which made them have to raise their vigilance, and it was going to be winter in another month, and the Tang army would definitely step up the attack in the next few days, and they could not relax at this time.

As long as they survive this month, after entering the harsh winter, if those Tang troops do not withdraw, then they will wait for death.

Goguryeo soldiers crowded the city, and all kinds of city defense equipment were also placed on the city walls, and as long as the Tang army dared to approach, they would unceremoniously greet them.

And this time the offensive of the Don Army was different from every previous one.

In the past, in order to capture the city as soon as possible, the Tang army was almost lightly armed, and few heavy infantry and other types of troops appeared on the battlefield.

And this time, the formation of the Tang army was lined up, and the situation at the head slipped away from the heavy shield soldiers.

"These Don troops don't want to attack anymore? Can the heavy shield and heavy infantry climb our city? ”

Some Goguryeo soldiers taunted the city, and the heads of these Tang generals were literally flooded.

Although the defense of these troops is very strong, they move very slowly, and sending these people to attack the city is not to use them as targets for the Goguryeo people at the head of the city.

"Come on, come on, everyone, you're welcome, let's see if it's their big shield heavy armor with strong defense, or our strong crossbow with strong attack power."

The Goguryeo soldiers were still coaxing, but the coaxing was coming, and the generals of the Goguryeo people looked at each other, and those soldiers immediately equipped the guys in their hands, as long as those Tang troops entered the attack range, they would not hesitate to attack them.

The Tang Army's offensive formation was a little strange, but Xue Li had high hopes for them.

Heavy shieldmen held large shields in front of them, and they were able to block arrows and other objects from the capital of Goguryeo.

Their main attackers, the archers, followed the heavy shield men one by one, and each heavy shield soldier was followed by a group of archers.

The hoplites at the rear were not meant to besiege the city, and if the rockets could cause chaos at the head of the Goguryeo capital, then the hoplites would attack the city gates directly.

In other words, this group of hoplites will only go up when they are sure of taking the wall.

Although they can't go on it now, isn't it cool to take it out to be strong, at least it can scare the Goguryeo people in the city and give them an illusion.

Besides, if these rockets directly blinded the Goguryeo, then the Tang army would be able to cover the attack and enter the city, and if they only thought about gathering the heavy infantry at that time, they would miss the fight.