Although the Beiping Army resumed the implementation of the "Jianye No. 1 Operation Jihua", it still adopted a policy of loosening the outside and tightening the inside. However, considering that the scale of the expansion and mobilization of the "Flying Dragon Army" and the "Security Army" this time is not small, and in particular, the "Security Army" will expand its strength into 40 regiments and more than 100,000 people within three months, even if we try to cover it up, the movement of such a large-scale conscription operation will definitely not be small. In particular, it is now the busy agricultural season, and in order to ensure this year's harvest, it is impossible to recruit a large number of young and strong laborers from among the peasants to join the army at this stage, and the source of troops for the "security army" can only be mainly young and middle-aged residents in various prefectures and counties. As a result, it is almost impossible not to be noticed. After all, whether it is a small merchant or a hawker on the street, or a sudden and large decrease in the number of employees and men in the workshop or service industry, it will be noticed by the common people in the city in a very short time. And these situations that even ordinary people can discover, how can those spies and hosaku hidden in the shadows from other shili not notice. Therefore, while continuing to implement the policy of "loosening the outside and tightening the inside," the committee decided to take the initiative and create a false impression in order to find a reasonable excuse for the current expansion of the army and the mobilization of the troops. As a result, under the joint planning of the committee, the Ministry of Intelligence, the Ministry of Military Affairs and other departments, a so-called "Overlord Operation Jihua" that confused the various units of the Later Zhou court, half-truths and half-truths, and the same name as the deceptive actions taken by the European and American allies in the previous life to mislead Nazi Germany and cover the imminent "Normandy" landing operation, was freshly released.

The main purpose of the "Overlord Operation Jihua" is to claim that the Beiping Army will occupy the Khitan Zhongjing Road in one fell swoop as the so-called "set goal", and send a large group of men and horses north of the Great Wall to carry out large-scale attacks on the states and counties of the Khitan Zhongjing Road, so as to confuse and mislead the various units of the Later Zhou court, so that they mistakenly believe that the large-scale expansion and mobilization of the Beiping Army is for the purpose of fighting out of the fortress and conquering the Khitan, so as to effectively cover up the true purpose of its troops pointing south and intending to chase the Central Plains. This ensured that in the near future, the Beiping Army would have the upper hand in the wrestling with the various forces of the Later Zhou court, and would be able to win by surprise and fully grasp the initiative in the struggle.

According to the so-called "Overlord Operation Jihua", the Beiping Army will dispatch a record 50,000 troops in this Northern Expedition. These include the 1st Composite Infantry Division, the Independent Cavalry Regiment, the Independent Artillery Regiment, the "Ranger" Battalion, the "Wolf's Tooth" Battalion, and some artillery of the 2nd Composite Infantry Division of the "Flying Dragon Army", the 1st to 4th Regiments, the 13th to 15th Regiments, and the Independent Cavalry Regiment of the "Security Army," as well as a logistics baggage force composed of more than 10,000 "Security Army" reserve soldiers.

Considering that only two years have passed, the battle scene is still vivid, and considering that the "Qingyuan" brothers once gave the Khitan army an almost devastating blow with only 40,000 horses in their hands, killing, capturing, and defeating the Khitan army of nearly 300,000 - including more than 100,000 Khitan elite soldiers and horses killed and captured - the glorious results. In the face of the military operation that the scale of the force has exceeded that of all the armies controlled by the "Qingyuan" brothers during the Battle of Youyun that year, whether it is the Khitans who are "about" to become the attacked side, or the various forces of the Later Zhou Dynasty who are closely following the every move of the Beiping Army and hoping to understand what this world's strongest army refers to, they cannot help but be shocked and sideways.

Although the various forces of the Later Zhou court were shocked by such a high-profile and ferocious action of the Beiping Army, they were shocked, but they also couldn't help but breathe a sigh of relief. Fortunately, the Beiping army pointed the spearhead of its attack to the north and smashed the pair of invincible iron fists on the heads of the Khitans; I am glad that when the attention of the Beiping Army is all in the north and there is no time to look south, I can confidently and boldly carry out my deep-buried and inhumane secret jihua, so as to realize the huge ambition that I have been trying to cover up and control before.

However, the Khitan court was frightened and uneasy, and hurriedly mobilized everything it could mobilize to prepare for battle. Not long after leaving the "Spring Bowl" land, Ye Lujing, who was moving to Yong'an Mountain, the place of the "Summer Bowl", immediately stopped moving after receiving the news. On the one hand, he ordered to mobilize all kinds of troops and horses to move closer to the place where he was camping, and quickly turned around and returned to Yuerluo, which was relatively far away from Zhongjing Road and had only been away for a few days. On the other hand, on the premise of ensuring that the guards around him were sufficient, he set up a so-called "Southern Expeditionary Army" of about 100,000 people, which was led by the only general who successfully led the main force of the army under his jurisdiction to jump out of the "Qingyuan" private army and return to the Great Wall.

Although, neither the emperor Yelu Jing nor the Khitan military generals believed that Yelu Tart Column could be put together temporarily, although it was stronger than the rabble, but it was not the strongest and most elite Khitan 100,000 horses, to resist the attack of the 50,000 Beiping army - after all, the 200,000 Khitan soldiers and horses who were far stronger and more powerful than him were not opponents of the other party. But as the king of a country, no matter whether Yelujing has confidence in resisting the Beiping Army or not, he must make a posture of fighting the enemy to the end. Otherwise, not only will he completely lose the morale of the army and the people, which were already somewhat weakened by the disastrous defeat in the Battle of Youyun, but will also give the dissidents in the DPRK who are dissatisfied with him and want to replace him for a long time to give him a reason and an opportunity to take advantage of it.

Second, this time, the Beiping Army's northern aggression is fighting outside the country and fighting on the outside line, while the Khitan Army is defending the territory and defending the country and fighting on the inner line. In particular, this time, the Beiping Army went north to capture prefectures and counties and occupy territory, and it could no longer maneuver and fight like in the past, as in the past. In addition, the Beiping army went out of the customs this time with an army of 50,000 troops, instead of a small group of two or three thousand people in the past, even if they wanted to raise food and solve the supply problem on the spot, they could not do it - the people outside the Saiwai were mostly nomadic herders, fishermen and hunters, and most of the people gathered near the prefectures and counties to cultivate were Han people who had always been preferential to the Beiping army and did not plunder in the past when they "hit the grass valley". I think that the Beiping Army will not do such a thing as robbing the Han people in Zhongjing Province to destroy their reputation and tear down their foundations. As a result, the Beiping army had to rely on heavy supplies from Guannai and on the logistical supply line that was vital to all Han Chinese troops. In that case, the Khitan army could use its advantage in mobility to avoid the main forces of the Beiping army and attack and harass its supply lines. When its logistics are unfavorable and supplies are insufficient, it will retreat without a fight. At that time, not only will the crisis in Zhongjing Province be solved, but if it is operated correctly, maybe the Khitan army will be able to seize the favorable opportunity on the way to the enemy's retreat and take advantage of it.

Therefore, although he was still apprehensive and uncertain, Yelu Jing still handed over the 100,000 army to Yelu Tart Lie by luck and ordered him to immediately set off south to fight the enemy.

It's just that Yelu Jing and a group of Khitan generals who supported him were lucky, hoping that the battle of Zhongjing Road could develop according to their own ideas, so as to keep Zhongjing Road, keep their throne, and keep their glory and wealth. But as the former army commander, Yelu Tartlie didn't think so at all. As the Khitan who had the most battles and contacts with the Beiping Army, and who had the fullest and most understanding of the strength of the Beiping Army and the difference in strength between the Khitan Army and the Beiping Army, Yelu Tart Lie knew very well that the Beiping Army he was about to face was different from any previous Han army.

Not to mention the sharp firearms used in the hands of the other side, which are like divine weapons and can kill people from miles away, in terms of their mobility alone, they are by no means comparable to any Han army in more than 100 years. Thanks to the large number of captures in the Battle of Youyun and the army building concept of "soldiers are expensive but not too expensive", the "Flying Dragon Army", which is now its main force, has horses, and the mobility of its troops is comparable to that of the Khitan Army. Even the elite of the "Security Army", which is used as an auxiliary force, is equipped with a large number of horses and carriages, so as to ensure that it can keep up with the pace when fighting with the "Wyvern Army" and will not be left behind by the main force. In the face of such an army that matched the proportion of horses in the peak period of the Han and Tang dynasties, the mobility and their own strength, but their combat effectiveness far exceeded their own, if they divided their troops to attack and harass the grain road according to the will of the imperial court, the result was probably to be broken by the other party and eaten bite by bite. If you give up the division of troops and concentrate the main force to fight a decisive battle with the opponent, then under the two-to-one ratio of troops, your side will have no choice but to become the target and victim of the opponent's sharp firearms, and finally end up with a total annihilation.

Faced with the embarrassing situation of breaking through the division and being annihilated in one fell swoop, Yelu Tartlie could only expect the commander of the Beiping Army to make the mistake of lightly advancing against the enemy, and in order to be able to achieve victory in a short period of time, he divided the 50,000 army into small units of 4,500 or even 2,000 or even 2,000 people, and attacked various prefectures and counties in Zhongjing Province respectively. In this way, it is possible for his side to take advantage of its absolute superiority in numbers to attack the Beiping Army, which is too close and far away from other friendly forces, in the hope of annihilating its first road. In this way, it can not only thwart the enemy's morale and boost its own morale, but also can be regarded as an explanation of the Son of Heaven's reliance and trust.