The fierce and accurate artillery fire, which was almost unavoidable when it was covered, not only brought serious casualties to the Ottoman forces in the city at this time, but also in the fierce blow, the morale of the defending officers and soldiers also quickly weakened in just a day or so.

In the past, because the entire city had been hoarding food on a large scale after years of preparation, this time an unprecedented number of defenders had also gathered, and many people felt that no matter how strong the enemy in the east was, they might not have the appetite to eat such a well-defended city. However, no one had ever imagined that the scale of artillery fire and even the level of application could reach such a high level. Despite the seemingly tall and sturdy walls, the defenders did not seem to have the slightest sense of security.

Of course, in order to effectively avoid the constant artillery fire. The defenders of the city gradually discovered some relatively safe places throughout the city. For example, the back of the city near the perimeter of the city.

Because most of the shells outside the city are projectile or side-fired into the city, and the fire is launched from multiple directions, it seems that there are no dead ends, but in fact there are still some dead ends. In particular, the changes in the mode of warfare over the past 200 years have made the new city defense system no longer a simple linear city defense, and to a certain extent, it also refers to the situation that the fortress has many winding concave and convex places. Even if the shotguns and even heavy shells fired from the side were often able to fall into them, the power and even the area of the sweep were greatly affected, and for a whole night, under the threat of continuous artillery fire that seemed to be still unstoppable, many large armies in the city also moved to these seemingly blind spots of firepower.

However, just as the sun was rising again, after about a quarter of an hour or so of reconnaissance, confirmation and even adjustment, Xiao Xuan issued the order to strike again.

The vast majority of the 500 or 600 pound naval explosive shells that had been prepared at night for a long time launched an ignition strike in a predetermined direction without much adjustment. In order to maximize the blasting effect, these heavy explosive shells of about 600 catties are not particularly thick and strong, and they are often mixed with prefabricated fragments of ceramic iron, so the maximum range is often only about 150 steps away from ordinary bows and arrows. However, at the time of the explosion, it still showed great power, which could often make people within a radius of seven or eight zhang and tens of meters lose their combat effectiveness in a short period of time under the violent shock, and the power was almost twenty or thirty times the weight of about 20 or 30 times the effectiveness of the American-made 107 mm chemical mortar in the World War II era. Under the fierce impact of these hundreds of projectiles, more than 30,000 defenders were killed or wounded in a short period of time, and many of the remaining 70,000 or 80,000 people also lost their ability to react and respond in a short period of time. At this time, the 50,000 besieging troops who had been prepared for a long time began to attack and assault from all directions, and at a relatively low cost, they annihilated the living forces of the 100,000-strong defenders near the outskirts of Istanbul.

The shock of this strike was not much less than the shock of the previous shelling that lasted for a whole day, and no one could have imagined that the enemy's fire attack would be so overwhelming. At the same time, the entire city, which originally seemed to be a strong force, suffered about two-thirds of the losses in less than two days, which was also very unexpected.

If it weren't for the fact that many of the Ottoman forces who had retreated into the city had seen the resoluteness of the powerful enemies in the east and even many of the habitual practices, it would have been difficult to hold on any matter what.

Xiao Xuan finally planned to give the defenders in the city a chance, and after the fierce blasting bomb attack and occupied the entire perimeter of the city, he issued an ultimatum, demanding that the armed forces in the city unconditionally lay down their arms and surrender at a special place within half an hour, and did not even leave too much time for the people in the city to discuss.

Such an attitude also convinced the defenders of the city that it was indeed as expected that if the other party's purpose was to completely hope for the Ottomans and assimilate the occupied territory as much as possible, then the existence of their own people would be regarded as some kind of trouble by the other party to a large extent, and it would be absolutely impossible to get decent treatment.

Of course, there are many people who are also unwilling to face the pressure of dying in battle in this situation, and there are still many lower classes who surrender at this time, and many people who finally commit suicide when they are controlled and difficult to surrender.

This phenomenon also made Xiao Xuan sure that if a full-scale siege assault was launched at this time, he should not suffer the kind of resistance that would cause the attacking team to suffer setbacks. Therefore, at this time, orders began to be ordered to shrink the forces that had occupied the entire periphery of Istanbul into the city and to carry out as much as possible.

The sound of guns and even the explosions of black powder grenades and black powder blasting rods also rang out at this time. In this battle in the city, Xiao Xuan did not invest in the main force of the new guard battalion and the independent artillery battalion. It was only the thousands of cavalry groups that followed the team that participated in the battle as a mobile reserve, and the main body of the assault combat mission was still 50,000 assault forces mobilized from Taixi and even southern Russia.

Although the team that launched the assault in the city still seemed to be inferior in terms of strength compared with the remnants of the enemy in the city at this time, the full right to information, the fire support capability obtained, and even the various offensive and defensive means it possessed fully reflected the satisfactory combat effectiveness. Although the attack did not show the combat effectiveness of the most elite troops, and the casualties soon exceeded 1,000, and eventually reached the scale of two or three thousand, the area under the control of the remnants of the enemy in the city was still being reduced from all sides. It was not until the remnants of about 70,000 or 80,000 men were finally compressed into the central area within a radius of only more than 400 steps and a mile that they encountered a sudden fierce resistance, and it seemed that it was difficult to push forward any further.

Of course, this was also largely planned, and it was at this time that the attacking teams began to switch to the defensive, and spread out as much as possible to build a system of fortifications to avoid accidental damage.

After nightfall, the remnants of the enemy in the center of the city seemed to have launched several large-scale attacks, but they were finally taken back under the predetermined position of the prepared blow-blasting defenses and the deployment of artillery. When the sky lit up again, many people began to understand that the time had come to decide the winner.