The reflection of light is a very simple and common physical phenomenon, which is the phenomenon of using a certain medium to change the direction of light propagation, which is very common in daily life, among them, especially the light emitted by the mirror is the most intense, the emission of light-colored objects is more powerful, and the light reflected by dark-colored objects is very weak.

Therefore, if you want to reflect light, you must choose a substance that can reflect light, especially a good substance, white walls, mirrors, and light-colored wood boards are very good reflection tools.

In fact, a long time ago, human beings have begun to learn to use the reflection of light, such as the famous Yingxue reading, which is about Sun Kang, a scholar in the Western Jin Dynasty, because his family was poor, he had no money to buy lamp oil, and he couldn't read at night, and one day, he found that the light in the window was very bright, and when he got up, it was snowing outside, so Sun Kang picked up the book and ran to the snow to read the book, and the light reflected by the snow was enough to illuminate the book, so that Sun Kang could see the content of the book smoothly, which is a good practical example of using light reflection.

Of course, there are many such examples, such as the Ming Dynasty literati Xiang Zhi Xuanzhi, one of which is the reflection of the sun's shadow, the beginning of the room, which means that the sunlight is reflected by the north wall, so that the whole room has a very bright feeling, and it is also an example of using reflection to increase light.

The effect of using mirrors to launch is the best, but there are not many mirrors in Maia City, at most they are some small vanity mirrors, which are still purchased by wealthy families from merchants, and merchants also buy from Datang, this thing is only available in Datang.

In other words, it is not practical to collect mirrors from the city, and such small mirrors have no effect, so other items must be used.

Light-colored wood panels are a good choice, and if you apply white lime to them, the effect will be even better.

The young general of the Tang Dynasty explained first, and then found a wooden shield for defense, and placed it on the side of a brazier, and soon, the space at the bottom of the brazier became much brighter.

"This is still a small shield, if you use a larger plank, launch a larger brazier to light up the city."

The young general of Datang said.

Seeing that the ground had become brighter, Artik immediately felt that it was feasible, so according to the design of the Datang Junior, people immediately made reflective panels.

These reflective boards are very simple, they are very ordinary panels, smeared with white lime, and there is a big hole in the center of the panel, which is used to disperse smoke and fire prevention, because the reflection source is the brazier instead of the light, if you don't design a big hole, the black smoke from the brazier will blacken the board, and even burn the board, so you must leave a big hole in the middle, anyway, the lack of this big hole does not have much impact on the reflected light.

Because of the need to make shields and other defensive weapons, there are many half-finished planks in the center of the castle, which can be quickly used to make fire-throwing planks, and it only takes a short time to make them, and maybe they can be used before dawn.

The planks were carried to the wall of the north gate, and in addition to a large hole, they were supported by two sticks, which were much higher than the women's wall, after all, the planks were very large, and if they were too small, they would not emit much light.

The planks were thus hung on the main wall, and a brazier was placed at the entrance to the circular opening, which contained violently burning charcoal.

When all this is set up, the city wall under the brazier is first illuminated very brightly, looking out, a large area of the entire urn city is illuminated, after the wooden planks are removed, the urn city is dark again, so many comparisons, everyone can see that such equipment does have a great effect, and can indeed play its due role.

The urn city is a convex structure, so one side of the gate tower and two sides of the urn city are the focus of the enemy's attack, and the wooden planks made in advance are placed on the wall of the urn city to illuminate the surrounding ditches, so that the Khorasan archers who are hiding cannot hide.

When these planks were in place, the trenches outside the city suddenly lit up, and the Khorasan archers who had been hiding were suddenly exposed, especially the daggers and other iron objects they wore reflected the light, allowing them to easily reveal their positions.

The Khorasan archers outside the city were exposed, and the archers in the city were of course not polite, and they began to attack with the crossbows in their hands, killing and injuring the Khorasan archers vigorously.

At this moment, the defenders on the city wall have a greater advantage, in terms of cover, they are about the same, one has a trench cover, the other has a female wall cover, but the defending soldiers and horses have a large number of scarecrows, which can distract the attention of the Khorasan archers and mislead them to shoot the scarecrows, thus playing the role of protecting the defending crossbowmen, in addition, the city wall is condescending, which has a great buff effect on the range and power of the bow and crossbow, and the Khorasan archers need to attack the target at a high place, which itself is in a very disadvantageous state.

In short, the defending side occupies a greater advantage, and the biggest advantage of the attacking side is their well-trained, after all, the defending side is mainly recruited, and the combat level is far inferior to the soldiers and horses outside the city, and the number is not as good as the siege soldiers and horses, which is the advantage of the soldiers and horses outside the city.

In the case of the reflection of light from the wooden planks, the elite archers of Khorasan in the trenches outside the city could no longer be arrogant, they were suppressed and could not raise their heads, they wondered very much, they had obviously shot so many defenders, why could the defenders still have such a high counterattack force? How many defenders are there in the city, these planks are so annoying that they panic.

And what makes the soldiers and horses outside the city even more depressed is that these planks are difficult to destroy, whenever the stones outside the city hit these planks, at most the planks are knocked down, and they only need to be re-erected, anyway, some wooden chopsticks, even if they are broken, they can be easily repaired, there is no difficulty.

Hearing that the defenders of the city had inflicted heavy losses on the Khorasan archers in the trenches outside the city, Artik was very happy, as long as his soldiers and horses could win the battle, he would be very happy, the city was well defended, as long as all the soldiers worked hard to defend the city, they would be able to hold the city, and keep the siege army outside the city out of the city.

The fierce fighting lasted from night to early morning, without the slightest intention of stopping, and the losses of both the offensive and defensive sides continued all the time, not only with casualties, but also with the destruction and consumption of a large number of materials.

The war is fought with resources, if there is no support from resources, the war cannot be fought, the city has long been prepared, a large number of materials are stored, and there are more materials outside the city, which supports the war of attrition between each other.

After daybreak, Artik asked his subordinates to count the casualties, and he was dissatisfied with the results, the casualties at night were even higher than during the day, and the casualties in the whole city reached 3,000 men and horses, which was 5,000 men and horses compared to yesterday's 2,000 men and horses.

In a day and a night of defending the city, there were 5,000 casualties, and this loss was really too great, although seventy or eighty percent of them were wounded, but these wounded soldiers, the slightest, took three or five days to participate in the battle again, and the more serious soldiers needed half a month, or even several months, to heal.

There were only a little more than 30,000 soldiers and horses in the city, and only 40,000 if you counted the reserve soldiers.

Of course, these are ordinary troops, and if the most elite soldiers are allowed to go to the wall, the losses may be smaller, but now Artik is reluctant.

Any war is a blow and then three exhaustion, the enemy's attack at the beginning must be very fierce, the attack can cause the most damage to the defenders, in this case, let the recruits to be cannon fodder, is undoubtedly the best choice, it is much better than letting the elite to be artillery fire.

The reason for the more casualties at night has also been found, that is, the previous lack of preparation, being pressed and beaten by the enemy troops outside the city, and after the masks and armor, and reflective panels are ready, the situation has improved a lot, but the previous losses are indeed very large, especially many recruits who have just entered the city, just mechanically carry out the orders of the generals to attack the enemy outside the city, but they don't know how to protect themselves, and even many soldiers feel that wearing helmets and masks is too uncomfortable, so they throw them aside, which causes a lot of casualties.

This lesson is well worth summing up, and only by summarizing the lessons can the number of casualties in the defense of the city be reduced, so for this reason, Artik on the one hand replenishes the troops, and on the other hand, asks his subordinates to train and educate these recruits, so that they know how to attack the enemy and how to protect their own safety.

The 3,000 soldiers drawn from the reserve were soon sent to the city gates to join the city defense army, and at the same time, Artik's personal soldiers also went to the city gates and instructed and educated the inexperienced soldiers, telling them how to effectively attack the enemy, how to better protect themselves, and so on.

Of course, the defending side has learned the lessons, the attacking side has also learned a lot from the fierce siege battles.

Although they are all veterans, they have not fought hard battles, but more are field decisive battles, rarely carry out siege operations, and have never encountered such a well-defended city, the advanced weapons of the defenders, they have not seen it, this is the reason why they have not been able to conquer the city for a long time, I think that when they were resisting the Umayyad Dynasty, the Khorasan cavalry was invincible, whether it was in the field, or in the siege operations were very powerful, almost invincible, a good interpretation of what is called elite troops, What is the Invincible Legion?

But now, in the face of the well-defended city, they are completely dumbfounded, and their previous experience is difficult to use.

The city defense is more tightly guarded is the first reason, more advanced weapons are the second reason, and there is a more important reason, is that the Apos dynasty has lost the hearts of the people, after replacing the Umayyad dynasty, the perverse behavior of the Apos faction chilled the Shiites and other factions, so, except for the Apos faction, the rest of the *** almost do not support the Apos dynasty, so, as long as the Khorasan cavalry attacked the city, there will be the phenomenon of internal support in the city is gone.

Of course, among them, the dispersion of people's hearts is the main reason, most of the people in the city are Shiites***, of course, they support their own Ibrahim, and the actual leader of the legion, Artik, so they will not support Ziyad of the Apos dynasty.

Ziyad got up early in the morning, and the first thing he did when he got up should be to eat, but Ziyad obviously didn't put eating in the first place, he was very concerned about the battle last night, including the number of casualties on his own side, and the number of casualties on the defending side, which was very important.

"How was the battle last night?"

Ziad waved his hand and asked his subordinate with the food to leave, he didn't want to eat yet.

"General, last night our army won a complete victory, destroying at least 10,000 enemies."

The subordinate happily reported.

Of course, the subordinates did not lie, according to the crossbowmen's reports, there is indeed such a high number, but many of the crossbowmen's scores are scarecrows, and they shoot scarecrows, not real city defenders.

Qi Yade was slightly surprised: "We annihilated 10,000 enemies in one night, when did our soldiers become so heroic, really?" ”

"General, this is the data reported by the troops of all sides, and there should not be much discrepancy, but the results in the second half of the night are not good, and most of these results are the results of the first half of the night."

The subordinate said.

Ziyad continued to wonder and asked, "What's going on, why is the battle brilliant in the first half of the night, but not in the second half of the night, what is the reason?" ”

The subordinate 1510 recounted the situation, pointing out that the defenders used reflective wooden planks to shoot the light from the city walls onto their positions, thus making their soldiers more easily exposed and losing the advantageous advantage of concealing and destroying the enemy.

After all, the crossbowman can aim and shoot very calmly without being detected by the enemy, so that he has a higher hit rate, but if he is exposed, the crossbowman will not have enough time to aim, he must shoot quickly and then hide to protect his life.

When he heard that his crossbowmen had won a great victory in the night, Ziyad was very excited, but when he heard that in the second half of the night, the soldiers and horses in the city used reflective wooden planks to project light, exposing all the Khorasan crossbowmen, he was very resentful, and gritted his teeth angrily.

"General, the enemy defense has only 30,000 soldiers and horses, and we have wiped out one-third of their troops in one day's effort, and after three days, the enemy army will have no soldiers to defend the city, and the city of Maia will be ours sooner or later."

The subordinate said excitedly.