Although when the negotiations broke down, the East China government announced that it would start the offensive two hours later, the 21st and 35th divisions of the 11th Field Army immediately left Tianjin and marched in the direction of Beijing along the Tianjin-Beijing railway.

Since these two divisions did not bring heavily equipped troops, and they were both lightly armed, the speed of the march was very fast, and after more than three hours of rapid marching, they arrived near Langfang almost at the same time as the armored vehicles. The KPA then quickly began to set up positions, and the armored trains were also supported by on-board artillery in preparation for battle.

And although at this time, the Qing army has been arranging the Langfang defense line for more than 3 months, but at this time just received the news of the breakdown of the negotiations, I didn't expect the People's Army to catch up so quickly, in the Qing army's cognition, 60 kilometers of distance, at least 1-2 days of marching time, and more seriously, at this time, the Qing army's main general Tie Liang is not in Langfang, but by the co-commander Zhang Yongcheng is in charge of command, because Tie Liang is generally stationed in Tongzhou, which is close to Beijing, you can enter Beijing at any time, and even if Langfang has something, it only takes 2 to take the trainIt can be reached in 3 hours.

Although Tie Liang also received the news of the breakdown of the negotiations in Tongzhou at this time, he believed that at this time, the people's army's energy should be focused on capturing Tianjin New City, and would not attack Langfang, even if it was to attack Langfang, it would be said until tomorrow, the distance between the two sides was more than 60 kilometers, so he did not care, and still stayed in Tongzhou, planning to go to Langfang early tomorrow morning.

It wasn't until he received a telegram from Zhang Yongcheng, the co-commander in command of Langfang, that he was taken aback, and he never imagined that the People's Army's march would be so fast, and it would have reached the vicinity of Langfang. So Tie Liang sent a telegram to Zhang Yongcheng, ordering him to hold Langfang no matter what, and at the same time ordered to prepare a train immediately, and he had to rush to Langfang to take command.

However, at this time, Tie Liang was not too panicked, because he was still quite confident in the defense line that Langfang had spent more than 3 months building, and thought that even if he was not in Langfang, Langfang's army should be able to hold the position.

It should be said that Tie Liang is not blindly confident at this time, his self-confidence is indeed somewhat reasonable, the defense line of Langfang was built under the design and guidance of the French military advisers, and a large number of various fortress facilities were built, and between the fortresses and the fortresses, there are trenches connected, which can support each other, and the arrangement of the fortresses is also precisely calculated to ensure that all kinds of firepower assist each other, and there is no dead angle of firepower. Of course, due to the limited time after all, most of the fortresses are still mainly sandbags and wooden fence structures, and only the 12 main node fortresses are built of masonry, which also forms the core of the defense line. It can be said that although it is not impregnable, it is also strong and abnormal, and even the French military adviser who designed the defense line claimed that the People's Army would have to pay at least 10,000 people to break through this defense line, so Tie Liang had this confidence.

When the Qing army built the Langfang position, the East China government was of course clear, although it did not send people to stop the destruction, but through air and ground reconnaissance, the situation of the Qing army's position, the distribution of firepower, the arrangement of troops, etc., have been clearly reconnoitred, and at the same time, the East China government has already mapped and mapped the map of this area in detail, so the train artillery can be outside the visual range of the opponent's position, only rely on the map coordinates to set parameters, to strike at the Qing army's position, and very accurately hit the Qing army's important firepower stronghold position.

After the end of the Mongolian War, the East China government built an airfield in Tianjin, and initially arranged four reconnaissance planes, which could not only reconnoiter the positions of the Qing army from the air, but also fly directly from Tianjin to Beijing to observe the dynamics of Beijing, and Bi Jing was only about 120 kilometers from Tianjin to Beijing, which was completely within the flight radius of the current aircraft. A month before the Tianjin talks, the East China Government added six more reconnaissance planes to Tianjin, four of which were two-seaters, bringing the number of planes in Tianjin to 10, and it was also a preparation for future wars, which could be calibrated in the air for the artillery firing of the People's Army.

After about an hour of preparation, the People's Army also flew a two-seater reconnaissance plane over the battlefield, and launched an attack on the Qing army's position in Langfang at about 3 o'clock in the afternoon of the same day.

First of all, the train artillery launched an artillery bombardment, and 16 155-mm guns, divided into four groups, opened fire in turns, fiercely bombarding the positions of the Qing army.

Although the number of artillery of the People's Army is not large, but the power is quite powerful, stronger than the 155 mm artillery of the general army, so although the important firepower strongholds of the Qing army are basically made of bricks and stones, they cannot resist the fierce attack of 155 mm shells, and the artillery bombardment of the People's Army is calibrated in the air, and the accuracy is correspondingly high, so the important firepower strongholds of the Qing army are destroyed by artillery fire one after another.

However, due to the limited number of artillery guns carried by the armored trains, and at the same time in order to maintain a safe distance from the Qing army's position, only 16 155-mm guns could be used at this time. Before the Qing army's important firepower strongholds were completely cleared, they still had considerable counterattack power.

But what made the Qing army desperate was that they couldn't see where the shells came from, so it was impossible to judge the position of the people's army's artillery position, and there was no way to counterattack, in fact, it was useless to know it, because the artillery equipped by the Qing army was basically below 100 mm, and there were only very few large-caliber guns above 100 mm, and the firing range was not more than 10 kilometers, so the location of the armored train had far exceeded the range of the Qing army's artillery, and the Qing army could only be beaten passively.

The shelling lasted for about 40 minutes, and the 12 main fire strongholds of the Qing army had been destroyed by the People's Army 6, of course, only 2-3 percent of the shells actually hit the strongholds, and the rest all fell on the positions of the Qing army near the strongholds, but the trenches dug by the Chun army are still old-fashioned trenches, with a depth of only about 2 meters, although under the advice of the French advisers, the trenches were dug into curved shapes, which is conducive to evading artillery fire, but there are no fortified artillery holes, and the defense of large-caliber artillery is still a lot worse, after all, the impact of large-caliber artillery explosions also has great lethality, and some improvised stronghold fortresses will also be hit by mistakeThis kind of fortification with wood and earth structure has a very low defensive effect on 155 mm shells, as long as it is hit by a shell, it will inevitably be exploded, so a large number of Qing soldiers died in the position, and the rest of the soldiers could only pedal in the trenches and did not move, not to mention the stronghold fortress that was bombed, and the soldiers inside were almost nine deaths.

Although by this time, the actual losses of the Qing army's positions were not large, except for the destruction of half of the main firepower stronghold fortress, and most of the other fortresses, whether they were improvised stronghold fortresses or trenches, were basically undamaged, but at this time, the impact on the Qing army's mind was quite huge, first, the power of the 155-mm artillery shells used by the People's Army was too great, and the vast majority of the Qing soldiers lacked experience in actual combat, and they had hardly seen such powerful artillery shells in peacetime training, and the carefully built defense line had almost no defensive effect against such artillery shells; second, the Qing army could only be passively beaten, and there was no room for fighting back, Such a battle can be fought, and anyone will be unbalanced in their hearts, not to mention that the Chun Army is not a strong-willed army, relatively speaking, the Beiyang New Army is a relatively tolerant army, and it is not easy to carry it until now, but it will end here, and it is only a matter of time before it collapses.

In the end, the whole line of the Qing army collapsed, after destroying the 6th main fire stronghold fortress, the KPA quickly adjusted the target, and then attacked the 7th target, after 2 rounds of adjusted shooting, in the 3rd round of 4 shells, finally 1 hit the stronghold fortress, of course, just one shell, not enough to blast the masonry fortress, but the next 9 rounds of fire, hit the stronghold fortress 8 times, blasted the fortress open a gap, and destroyed one of the gun ports, killing and wounding more than 10 soldiers.

The breach in the fortress was blown up, which meant that it was not far from being completely bombed, so the other soldiers in the fortress did not dare to stay in the fortress and fled from the fortress one after another, in fact, these soldiers did not really intend to escape from the position, but only escaped from the fortress first, temporarily avoiding the bombardment of artillery fire.

But just now a total of 12 rounds of shelling, only hit the fortress 9 times, but the remaining 39 shells all fell into the positions around the fortress, the Qing soldiers guarding the position were wounded and killed countless times, and saw the soldiers in the fortress escape, and thought that they were going to escape from the position, originally these soldiers' psychology had been on the verge of collapse, only one kick at the door, and saw the other soldiers fleeing, in the heart also found resonance, so they also fled from the position, even the officers could not control. Of course, the officers didn't really want to care, but the soldiers ran away, and they had a reason to flee from the position.

Soon the escape from the position triggered a chain effect, at first it was still a small force of troops, but after a short time, it became a complete rout of the entire position, and some positions that had not yet been attacked by the People's Army also began to appear unstable.

The changes in the position of the Qing army were immediately discovered by Zhu Jinqi, the commander of the 21st Division, although the firepower points of the Qing army's position were not knocked out at this time, but this fighter was not to be missed, so Zhu Jinqi immediately ordered to launch an attack.

At this time, the 21st Division had completed all its combat preparations, and the nearest soldiers were less than a kilometer away from the Qing army's position, and after receiving Zhu Jinqi's order, they immediately began to attack, and the first attack on the Qing army was mortar bombardment.

Although the 21st Division did not bring artillery troops, but the mortar units were all brought, but the range of mortars was short, and the power of the shells was insufficient, so it was not a big threat to the fortress, so although the mortar positions were arranged, they had not opened fire and bombarded, at this time more than 240 mortars in the division opened fire together, and the intensity and density of the bombardment far exceeded the shelling just now, and the entire position of the Qing army was almost covered by the artillery fire of the People's Army.