Because the current enemy is somewhat unfamiliar, and at the same time lacks detailed and in-depth intelligence, the military conference did not produce a detailed battle plan, so the current military operations of the Han army appear to be somewhat conservative. Although Zhao Liangdong's troops had broken through the enemy's flank not long ago, it was clear that such a victory was not representative in the present day, and the battle-hardened Han generals apparently did not consider the Khalkha and Hui servant armies to be the same thing as the Junggar elite.

Now the front line of the two armies maintains the area of the Yunzhong River in Xinzhou, Lin Feng gave an order, and nearly 100,000 people of the rear army stepped forward together, under the cover of the army, built a large camp fortress, built fortifications, and the main force was in this kind of action similar to the movement of ants step by step, slowly but resolutely encroaching on the front line of the Mongolian army.

Battles happen all the time, with the Han army fortifications step by step oppression, gathered in the Xinzhou area of the Mongolian army suddenly felt that the space was narrow, had to send a large number of cavalry troops to take the initiative to attack, desperately obstructing the Han army's civil engineering construction, at the beginning, this kind of midnight cavalry raid has achieved very good results, the musketeers and people who were caught off guard were powerless under the impact of the cavalry, but after many lessons Zhao Liangdong quickly adjusted, Zhao Guangyuan's cavalry army was concentrated, Close to the front line of the guard, and at the same time of construction, the rear often within the firing range of the artillery batteries, fire support for possible battles, this configuration mode soon let the Mongol army taste the bitter, because of the dispersion of troops, insufficient firepower and other reasons, these small-scale sorties and harassment are often found by cavalry scouts very early, and then the Han army iron cavalry immediately dispatched to meet the attack, while fighting and retreating, until the enemy enters their own fire range and then open artillery bombardment, resulting in the opponent is killed and wounded but can not get close to the fortifications one step.

It is undoubtedly extremely stupid to storm the enemy's fortress with elite cavalry. The Mongols soon halted this futile attempt, and when the Han encroachment front pushed across the Yunzhong River, the Dzungar army soon realized that they were in a predicament - their proud Mongol iron cavalry was useless in front of the endless fortifications, and in terms of the comparison of the firepower of the two sides, whether it was individual guns or large-caliber artillery, they were undoubtedly far inferior to the Han army.

Judging from the current situation, Geldan's strategy of passive defense and attrition of the enemy army has basically failed, and it is undoubtedly quite ridiculous to use the nomadic mentality to measure the manpower of the Han people, and he greatly underestimated the patience and mobilization ability of the Han army. So now the initiative on the battlefield has basically been in the hands of the Han army.

Although Lin Feng talked a lot about the so-called "protracted war" at the military meeting, in fact, everyone knew that the generals of the Han army, including Lin Feng, did not believe that Geerdan would fight a tug-of-war with the Han army in Shanxi, and this kind of tragic war of attrition was not at all what he Geldan could afford to fight, and what was even more worrying was that in terms of the current political situation, Lin Feng was not his mortal enemy, he only came to Shanxi to get a vote and not to fight with the Han army, his real enemy was in Eastern Mongolia and in the Hulunbuir steppe.

If Lin Feng was not mistaken, the reason why the Junggar army put on such a defensive posture was just to restore the morale of the army that was exhausted in the siege of Taiyuan, and at the same time wait for the Han army to make a mistake. This passive posture is just a smokescreen to confuse the enemy, whose real purpose is to seek a favorable decisive battle.

However, no one expected that the fuse of this decisive battle turned out to be Yu Chengchan who was far away in Taiyuan.

Since the Han king's envoy entered Taiyuan in the early part of this month, Yu Chengchan, the governor of Shanxi Province of the puppet Qing Dynasty, planned for hundreds of thousands of people in Taiyuan, that is, to surrender to the Han court, and the only condition for this surrender was that the Han army must rush a batch of supplies to Taiyuan in the near future to help the Taiyuan soldiers and civilians who were on the verge of despair.

In any respect, there was no reason to refuse such a request, so when Yu Chengchan's surrender and the governor's seal arrived in Boming, the Han army's convoy to Taiyuan set off immediately.

In order to win over the people of Shanxi, establish a positive image of the Han court in Shanxi, and plan for the prestige of the Han King Lin Feng, this transport brigade is extremely large, in addition to a large number of food, there are also a lot of medicines, and ordnance to maintain the defense of Taiyuan, in the plan of the staff of the Guards, this huge team will be escorted by a brigade of infantry and a brigade of cavalry of the Guards Nearly 5,000 people. Passing through the Longhua River to Pingdingzhou, waiting for the abandoned ship to land in Mengxian County, passing through Shouyang and Yuci along the official road, and then under the cover of the army, then Yushui was transported into Taiyuan City in one go.

In all fairness, the plan was undoubtedly impeccable from the point of view of writing, the staff officers had taken great care to consider every detail, and even before the departure of the troops, the vanguard of the outposts had already rushed to the predetermined stopping points to make preparations, the various means of transport were quite well prepared, and the troops responsible for covering were all well-trained, loyal and elite troops, but alas, any plan was just a plan, not a change in the situation.

This transport fleet was discovered by the scouts of the Mongol army as soon as it traveled from the Hutuo River to Dingxiang - since Lin Feng set up a large camp in Boming and hoarded grain through the river, Geldan has been worried about this, in his previous judgment, the Han army of the expedition was as high as hundreds of thousands, and the requirements for grain and straw must be very amazing, and although Zhili and Shanxi are close, but the Taihang Road is notoriously steep southbound, so he estimates that the logistics supply of the Han army must be very tight, but this time after the Han army arrived in Xinzhou, But the use of waterways to transport, not only greatly saved manpower and material resources, but also extremely fast, which really caught him a little off guard, in fact, he was originally very cavalry mobile attack, cut off the Han army's grain route, and the Han army's water and land supply method undoubtedly made his "grain interception tactics" reduced to chicken ribs, in order to recover this disadvantage, he was thinking about the way to kill the Han army's waterway all the time, so the scattered Mongolian rangers scattered along the Hutuo River, staring closely at this small river, Therefore, although the Han army repeatedly sent troops to repeatedly clean up, it could not fundamentally eliminate this threat.

A large number of transport fleets, starting from the Han army camp, loaded with food and materials to Dingxiang, when the news reached the Mongolian camp, Geldan did not need to think too much, he immediately judged the intention of the Han army, in fact, in the current situation, this intention is also very obvious, now the elite troops of the Mongolian and Han armies are all gathered in the Xinzhou line, such a fleet is heading to an irrelevant place, the purpose of course is to be obvious.

At present, the Junggar army is already in a predicament, and it is unable to move for the main force of the Han army, and now if this supply fleet is allowed to arrive in Taiyuan, it is conceivable that it will not take a few days to work hard, and the army in Taiyuan, which hates the Mongolian army to the core, will definitely be greatly strengthened.

After receiving the news, Geldan immediately moved the sweat tent to the front line of Xinzhou, and transferred more than 10,000 elite iron horsemen from the sweat tent Xue Timid, and ran all the way along the official road towards Dingxiang at dusk.

No matter how the Mongol army concealed it, of course, such a large-scale attack could not hide from the Han army brigade opposite. Of course, the base camp of the Han army would not sit idly by and watch the Mongol army's large-scale attack, and the Ma Ying troops arranged on the east side of the largest army immediately received Lin Feng's order, and the whole army was dispatched to block the enemy of Zhungar Ben attacking Dingxiang.