The sharpness of the firearms of the Shu army is already well known, in order to defend against the firearms attack of the Shu army, the Jin army has actually had some research inside, but the power of that thing is too great, and the Jin army really can't find a restraint weapon. However, some generals of the Jin army also found through research that the firearms of the Shu army basically relied on manpower to throw, or by burying them in advance and then detonating them, that is to say, there is a shortcoming in the range of firearms, as long as they can be restrained in the range, so that the Shu army does not have the opportunity to use firearms to attack, so that the threat of firearms in the Shu army can be greatly reduced.www.biquge.info

Soon, some corresponding tactical tactics were also studied, that is, to use long-range attack weapons as much as possible, such as bows and arrows, bed crossbows, catapults, etc., to curb the opportunity for the Shu army to use firearms.

For this reason, the Jin military also specially summoned some generals to conduct actual military drills and exercises, and specially conducted targeted study to improve the actual combat ability of the front-line generals. Zhu Zhen, the governor of Xiaopingjinguan, is one of them.

When he received the news of the Shu army's attack across the river, he rushed to the first line of the Yellow River embankment as soon as possible, and ordered archers, strong crossbowmen, bed ballistas, and catapults to fire with full firepower, and mercilessly attack all the Shu ships that entered the range.

The ships used by the Shu army are not warships, most of them are civilian fishing boats, merchant ships and ferries, the biggest difference between these ships and warships is that the sturdiness of the ships is quite different, if it is a warship used by the navy, its sturdiness is enough to withstand several blows from catapults and bed crossbows, while ordinary civilian ships are simply unable to withstand the attack of this heavy weapon, almost to the extent that they fall apart with one blow.

Zhu Zhen couldn't help but laugh proudly when he saw that the Jin army's long-range shooting was quite fruitful, but he also had a little regret, that is, the number of catapults and bed crossbows equipped by the Jin army on the shore defense was not enough. These fish can only be dealt with by relying on the dense arrows on the shore, but compared with heavy weapons such as catapults and bed crossbows, the lethality of ordinary bows and crossbows is greatly reduced, and it is difficult to achieve the level of destruction with one blow.

The Jin army also experimented with rockets to attack, the so-called rockets were wrapped around the shafts of arrows with strips of cloth soaked in oil, ignited and fired. Such a rocket is lethal to something of wooden structure and is theoretically most effective against ships.

However, the Shu army was obviously prepared, and drenched the ships with water or spread a layer of fine sand in the holds, so that even if the rockets hit the ships, they would not cause fires.

The first wave of the Shu army's offensive was quite contained, and basically most of the ships did not get close to a distance of dozens of paces, that is, the distance that firearms could throw, so the Jin army's defense line did not suffer any blows, as for those arrows that came over, for the ironclad coastal fortifications, it was just scratching, and did not cause any substantial damage at all.

The victory in the first battle greatly increased Zhu Zhen's confidence, although the defenders of Xiaopingjin Pass are seriously insufficient, but the solid defense here seems to be enough to make up for the lack of troops, not to mention that at the first time when he received the attack, Zhu Zhen had already reported to Shangfeng, Mengjin Pass and Xiaopingjin Pass are not too far apart, and after the imperial court makes a dispatch, it will only take half a day at most for reinforcements to arrive.

Zhu Zhen's report soon received a reaction from the imperial court, and Sima Yan personally ordered to mobilize the defenders of Mengjin Pass to immediately return to Xiaopingjin Pass, and the order given to Zhu Zhen was to hold Xiaopingjin Pass at all costs.

For Zhu Zhen, all he had to do was to hold on for this half day and wait for reinforcements to arrive. Watching the rising sun, how much Zhu Zhen longed that it could immediately rise above his head, and at noon, the reinforcements from Mengjin Pass would arrive, and it would be a moment of victory.

However, the Shu army could not let him get his wish, and after the first wave of attacks was frustrated, Liu Yin immediately sent the warship equipped with small catapults.

In order to accommodate catapults, the volume of these warships is much larger than those fishing boats and merchant ships, and they already have the scale of warships, all of which are the latest craftsmen invited by the Shu army during this time.

At this time, on the Yellow River, dozens of such warships lined up, surrounded by many fishing boats and merchant ships, slowly approaching the south bank, as if there was a feeling of standing out from the crowd.

Zhu Zhen was faintly a little uneasy, he also probably guessed the extraordinary things about these big ships, Zhu Zhen ordered the Jin army's catapults and bed crossbows not to take care of those small boats, and concentrate all their firepower to destroy these big ships.

However, these big ships of the Shu army are very ghostly, they stopped outside the range of the Jin army's catapults and bed crossbows, although the Jin army did their best, but those stones and crossbow arrows only fell into the river not far from the front of the Shu army's warships, and those warships were unscathed.

Although he was unable to sink these warships, he also managed to keep them in the middle of the river, and as long as he did not let them get close to the city, Zhu Zhen had nothing to worry about.

But the next moment made Zhu Zhen's face change abruptly, those warships were moored in the middle of the river, but suddenly they launched balls with green smoke, and in the surprise of the Jin army, those balls had already fallen on the Guancheng one after another.

The explosion of "boom" came and went, and the entire Guancheng fell into a sea of fire, and the gunpowder bullet used by the Shu army this time was larger than the bamboo grenade, and the amount of gunpowder was five times that of the grenade, so the power of the explosion was several times greater than that of the grenade.

The Jin army was suddenly attacked, it seemed to be embarrassed, where the gunpowder bomb exploded, the stumps and broken arms flew horizontally, many soldiers were blown up to the flesh and blood, the screams were endless, and the entire Xiaopingjin Pass was in chaos.

The warships of the Shu army continuously fired gunpowder shells, almost hitting them one by one, and the catapults and bed crossbows on which the Jin army relied to maintain the defense line were turned into scrap iron and rotten wood in the artillery fire, and even the masonry on the embankment of Guancheng was blown apart and broken.

The power of the firearms of the Shu army was fully revealed at this moment, and no matter how strong it was, it was claimed to be an impregnable defense line in front of it, after all, it was just a papier-mâché tiger, and it was only swept away.

The scene that was originally evenly matched was reversed in an instant, and such a blow was almost devastating for Zhu Zhen.