Ryukyung is one of the two largest cities on the Goryeo Peninsula, but in fact it is equivalent to a medium-sized prefecture in the country, with a permanent population of about 10,000 or 20,000 before the outbreak of the war.

However, since King Hui led the remnants to enter this place, the population of this place has directly doubled, reaching almost 40,000 people, and more than half of these 40,000 people are the remnants of King Hui.

In addition, the young people in the city and nearby villages were also recruited by King Hui without exception to build city defense facilities, and if necessary, they were used as cannon fodder to consume the cannonballs and bullets of the Tang Army.

Using forcibly recruited young cannon fodder to consume the shells and bullets of the puppet Tang thief army, this is the valuable experience that the Ming army has gained in fighting with the Tang Army for many years.

For the generals of the Ming army who defended the city, these conscripted cannon fodder were worthless, and they would waste food when defending the city, and use them to consume the shells and bullets of the pseudo-Tang thief army, which is definitely a measure that kills multiple birds with one stone.

Of course, this kind of measure plays a certain role in specific occasions at most, and the actual combat effect is often not very obvious in key battles!

Because the Tang Army is an army that pays far more attention to logistics and supply than the armies of other eras, unless it is not enough to get enough supplies on some secondary fronts, otherwise, in some key battles, they will always hoard a large amount of ammunition in advance, and fight the ammunition as if they don't need money, even if the generals of the Ming Army who are enemies see this style of play, they can't help but feel heartache: Nima, it's all money!

But even if the effect is not obvious, but there is still a little effect that is not, it is better than nothing!

Therefore, the Ming army continued to recruit a large number of young and strong people to participate in the war, let them serve as laborers to build city defense facilities before the war, and let them be at the forefront after the battle broke out, which was used to consume the ammunition of the pseudo-Tang thief army, consume time, and at the same time save a lot of food, so that the limited military food allowed the defenders to support more time.

Although most of the time, they will not be able to keep the day when they run out of ammunition and food!

The generals under King Hyeo's command naturally did the same thing after they came to the Goryeo Peninsula, so now in addition to about 20,000 remnants of King Hyeo, there are about 10,000 Goryeo young people in the city.

If it is said that the total strength of the army is 30,000, it can be said reluctantly, but neither of the two sides of the battle has counted these 10,000 Goryeo youths!

Kang Gaozhi used a telescope to observe the Liujing City in front of him, judging the strength of the defense in the city from some defensive facilities outside the city and at the head of the city, and at the same time, other middle and senior officers and senior staff officers of the 15th Infantry Division also held binoculars to observe, and recorded the key points found while observing.

"There is no obvious artillery position in the front city gate tower, and they should also know that the city building is a dangerous area, so no artillery is deployed, but about a hundred meters to the left of the city gate tower, there is an obvious artillery position, and there are three five-pound artillery guns."

"The trench outside the city two hundred meters to the left of the city gate tower, the terrain has obvious undulations, and defensive facilities should be built, and it is expected that there may be shotguns ambushed in it!"

"Directly in front of the city gate tower, about a hundred meters away from the city wall, there is a newly dug trench, the scale is not large, it is estimated that there will be a small team of dead soldiers ambushing!"

"On the battlements on the left and right sides of the city gate tower, there are a large number of sandbags, this place should be the center of the enemy's defense, it is estimated that five hundred musketeers can be deployed, and at the same time, there are obvious shotgun emplacements on this section of the city wall, at least three shotguns!"

Many officers observed with binoculars while recording, and later, everyone would integrate their observation records, and then draw out the Ming army city defense facilities on and outside the city wall, and this summary of the observation report will become an important reference for the follow-up troops to launch an attack.

Before launching an attack, the artillery unit will clear the above-mentioned defensive facilities one by one, especially the enemy's artillery positions, which will become the focus of the artillery bombardment, and strive to completely suppress the enemy's artillery force.

Just when the officers of the 15th Infantry Division were observing Liujing City, at the head of Liujing City, King Hui also took a vote of Ming army generals to the head of the city, and at this time, King Hui also held a monocular in his hand to observe the 15th Infantry Division outside the city.

The telescope in his hand can also see obvious engraved handwriting: "Guangzhou Optical Manufacturing Factory, Xuanping five years"

There is no doubt that this is a telescope produced by the Tang Empire, and it is also a standard army field telescope, because the Guangzhou Optical Manufacturing Factory is currently the only factory that can mass-produce telescopes in the entire Chinese range, and the telescopes produced by this factory have become the standard equipment of the army and navy, and at the same time, because of the use of glass lenses, the price has become acceptable, rather than the same as in previous years, telescopes that can only be made of extremely expensive crystal lenses.

At the same time, the company, which belongs to the Ministry of State-owned Enterprises and is also one of the dozens of key national defense enterprises, is an optical manufacturer in Guangzhou, which not only produces military telescopes, but also produces microscopes for scientific research and teaching, and high-magnification space telescopes.

Although the total production of high-precision microscopes and telescopes in the latter two is not large, they are expensive, and there is no place to buy them except here, so even scientific research and educational institutions like the Royal Institute of Technology have to buy these optical equipment at a high price for research.

Of course, their most lucrative business at the moment is not these high-precision microscopes, space telescopes, or military telescopes with a huge number of orders, but civilian telescopes.

In these years, there was a serious lack of observation methods, and those captains floating on the sea naturally could not do without telescopes, and at first the military was worried that telescope technology would leak out, which would lead to the enemy's use.

But then I figured it out!

Why did you figure it out?

Because the principle of the telescope is too simple, the most difficult part of it is not in the principle, nor in the housing, but in the manufacture of the lens.

However, the manufacture of this kind of lenses, if you want to industrialize mass production, is naturally more difficult, but the most sophisticated lenses in these years are actually not produced by machines, but polished by hand.

And who can polish the lenses? It is an eyeglasses craftsman!

In other words, you just need to find a skilled eyewear craftsman who can polish high-precision optical lenses for you.

In the early years, the Tang Army found that a small number of generals of the puppet Ming army also used telescopes, and only those private captains directly found glasses craftsmen to polish telescopes in the people.

The technology of this telescope could not be blocked at all, so later the empire simply approved the civilian policy of telescopes, allowing domestic optical companies to produce and sell civilian telescopes, and at the same time, the Import and Export Committee also approved the export license of telescopes.

As a result, a large number of captains quickly used telescopes, but these civilian telescopes are generally limited to navigation telescopes, and the miniaturized high-precision telescopes used by the army are still not allowed for civilian use.

The telescope in Huiwang's hand, which is a standard field telescope used by middle and senior officers in the Tang Army, has an observation multiple of four times, which is not high, but it is far clearer than ordinary telescopes, and at the same time the quality is excellent, the volume and weight are not large, and it can be carried around.

Naturally, it was impossible for King Hui to get this telescope through any normal means, but the people under his hands did not know what means were used to find this telescope and present it.

Through the telescope, King Hui can also clearly see the 15th Infantry Division outside the city, and he can be regarded as a battle-hardened He only glanced at it slightly, and he didn't even read it all, but through the neat rows of artillery of the puppet Tang thief army outside the city, he was able to judge that the puppet Tang thief army should be a main infantry division, and it was his old opponent, the 15th Infantry Division.

After fighting with the puppet Tang thief army for so many years, the Ming army has long been familiar with some fixed formations of the Tang Army, knows what infantry divisions are, and also knows what reserve divisions are.

But the more you know about the establishment and strength of the Tang Army, the deeper King Hui's face becomes!

The 15th Infantry Division, this is not easy to deal with!

He knew very well that on the side of the puppet Tang thief army, it is rumored that there are a total of more than a dozen main infantry divisions, and this fifteenth infantry division is one of them.

These three major battles are the records of the Liao-Allied Army and the 15th Infantry Division, and there is no doubt about the outcome, naturally it was a crushing defeat for the Ming Army in Liaodong.

Otherwise, the 15th Infantry Division would not have appeared outside the city of Liujing today, and King Hui would not have had to flee to the place of the Goryeo Peninsula.

Today, they're here again!

And it's not good!

The 15th Infantry Division of the Pseudo-Tang Dynasty has more than 50 field artillery pieces alone, in addition to more than 10 howitzers, and dozens of shotguns.

The artillery power alone is almost five times more than the defenders in the city!

However, when he invaded the Goryeo Peninsula before, King Hye was proud of his artillery unit, because it was with these artillery pieces that they crushed the resistance of the local natives almost effortlessly.

In fact, the Ming army in recent years is completely different from the Ming army a few years ago, at least, except for the Tang Dynasty Wang Division, in fact, there is really no army that can compete with the Ming army in terms of the quantity and quality of artillery.

It's a pity that their enemy is the Tang Wang Division, and the Tang Wang Division's artillery is more numerous and of better quality.

The remnants of King Hui in the city currently have a total of more than ten field guns, and the only thing worth mentioning is that they also have howitzers, no more, no less, just two.

These two howitzers are also made by themselves, and the technology of this short-barreled howitzer is actually very simple, as long as the barrel is made thicker, as for the grenade, it is not technical to use the fire rope fuse directly.

The reason why the Ming army did not use it on a large scale before was not that it could not be built, but that it could not be used.

Although this thing is powerful, but the quality of the gunner is very high, it is very important to grasp the time of the fuse, a bad will cause an explosion, or the shell just flew out, and then before it flew to the enemy's head, it exploded directly.