The day after the Sunset army entered the Imperial City of Mars, Sun Lin used the 30,000 soldiers in his hands to carry out a great purge of the Imperial City, including those who were indirectly killed by the Sunset ministers and generals who were implicated in any way, and those who had anything to do with the nobility and power class in the Imperial City, were all involved in this purge.

There are only two ways for a country to conquer a city, the first is to tie it to the battlefield of interests on its side, so that the assimilated people know that they are nothing if they lose themselves, and this practice will cause the conquerors to suffer some losses in interests; The second is bloody conquest, as the Spaniards did when they conquered the Aztec Empire, killing all those who have the will to resist, but this must be based on their own strong strength.

Obviously, as a centralized monarchy, especially a country that puts interests and profits first, Sun Lin's selfishness is impossible for him to make him make such a move to delegate power to the nobles of Mars, especially after Sun Lin learned from the intelligence network that the nobles of the Mars Empire are completely moths of the country and will only endlessly absorb the interests of the country, Sun Lin will not do this. So Sun Lin didn't hesitate to choose the second plan, anyway, he had 30,000 troops on hand, and Sun Lin could be said to have no scruples now.

Of course, Sun Lin did not implement the iron-blooded policy from beginning to end, and the strong dragon could not suppress the head snake, Sun Lin also attracted nearly half of the Mars people in the Mars Imperial City while carrying out the Great Purge, such as the farmers who owned farmland in the surrounding area of the Imperial City, the Mars merchants who had contact with the Sun Never Set Chamber of Commerce on the light and dark side, the manufacturers of daily necessities in the city, blacksmiths, carpenters, and most of the Mars people who belonged to the middle and upper civilian class and the early bourgeoisie class. Not only did they receive relief food from the Sunset Empire on the second day of the occupation of the Imperial City, but they also received the life security provided by the Sunset Army when the city was in turmoil.

As for the purge of the Imperial City of Mars, it lasted for 3 or 4 days and did not end until the beginning of February of the fifth year of the new calendar. After the purge, more than 10,000 Mars died under the butcher's knife of the soldiers who never set the sun in the past few days, most of them were Mars nobles, former members of the elite or people directly related to these people, of course, some of them belonged to the underground gangs of the Mars Imperial City, and Mars veterans who had been rewarded by General Mars.

When the Great Purge was underway, Sun Lin also used the War Eagle Messenger to make the other two ladder columns that had not joined the siege of the Imperial City of Mars turn around and go to open the road between the city of Riley and the Imperial City of Mars, and asked the soldiers stationed in the city of Riley who had recovered their injuries to march into the Mars territory under the leadership of the commander of the Sun Immortal Regiment who stayed behind, and formed a flanking attack with the two ladder columns, and must preliminarily seize the city of Neymars in the mountain range area north of the city of Riley before the beginning of March.

In addition, Sun Lin also ordered that as early as last year, the facilities outside the city were successfully renovated, and a spear horse farm and fortress stables that could train 1,000 Sunset Support Cavalry were built at one time, and the 3rd Regiment of the Sunset Cavalry was trained as soon as possible, so that these 10,000 soldiers who were expected to become Sunset Support Cavalry could be put into the suppression task in the newly occupied area.

After that, Sun Lin racked his brains and decided to build a temporary defense line in the surrounding mountainous areas around the newly occupied Imperial City of Mars to resist the upcoming 200,000 elite soldiers of the Dirk Empire, and on the other side, under the deliberate spread of the spies who never set, Kribold was killed in battle, almost all the high-ranking personnel of the Mars Empire were killed, and the news of the destruction of the Imperial City of Mars spread to the ears of all Mars people like a terrible plague. In particular, the more than 200,000 Mars soldiers and generals in the inland theater of operations on the northwestern continent learned about these news at about the same time, and heard many different versions of the news in the following days, but it was indeed roughly the same in content.

At first, no one believed it, but when the galloping fire flew thousands of miles through the snow, and the ministers and generals of Mars, who had been frozen into ice by the snow during the pass, and even the heads of the Imperial Marshals Tanger and Sandru, as well as the heads of the Emperor Scarred Kleband and the Eagles of the Sunset, appeared in the cities of Belor, Sandona, Yeku, and Ecuador, and these heads were hung above the gates of the city by the Sunset soldiers. Mars's top brass is finally no longer calm.

Although the ordinary soldiers have not yet realized that the heads on the city wall are the heads of the high-ranking personnel of their own country and the emperor, those who have been in contact with the high-level, the Mars legion-level generals know it, but these Mars generals also know that this is very likely to be the strategy of the Sun Never Set Empire to weaken the morale of the enemy army, so the Mars generals who received the news that the Mars Imperial City was occupied and the high-level leaders of the Mars Empire were slaughtered did not have a single day, so they ordered this news to be blocked, And to silence anyone in the army from talking about anything involving those heads.

When the news was received immediately from the former Warsaw Union city and Kribard's son, Prince Kried, to stop all offensive operations and retreat to the area around the Warsaw Union city to establish a defensive line to wait for the arrival of reinforcements from the Dick Empire, all the Mars officers who were fighting on the front line had an urge to scold their mother and lift the table.

The Grand Prince of Kerry Aid may not know what to do, but don't they, the officers who stayed on the front line with the Mars soldiers, still know the consequences of this retreat? If they really retreated, wouldn't that mean that those heads were the high-ranking Mars personnel by default? At that time, if the Mars army, whose morale has fallen to a low point, retreats, it will not be called a total retreat, but will be renamed a total rout. And now when they are bitten to death by the army that the sun never sets on their side, they choose to retreat, and those soldiers who may have prepared the sun will definitely chase themselves like lost dogs on the way to retreat.

However, in the end, more than 200,000 Mars people chose to retreat in batches under the command of the Mars legion-level generals, because instead of fighting the soldiers here for 2 days, it was better to retreat and wait for the reinforcements of the Dick Empire to arrive before counterattacking.

Then these 200,000 troops, who thought they had chosen correctly, naturally suffered a counterattack from 10 infantry regiments and 2 cavalry regiments on which the sun never set.