The Shu army has 40,000 horses, Sima Jun has only 20,000 horses in his hands, the Shu army occupies an absolute advantage in terms of strength, and the Shu army's ability to attack is much stronger than the Huns, so from the launch of the attack, the Shu army swept all the way to the periphery of Puban, and the outlying strongholds of the Kejin army approached Pujin Pass. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Sima Jun saw that the Shu army was menacing, he was also calm and relaxed, very calm, and fought with the Huns for two years, and developed Sima Jun's arrogant temper, thinking that Puban was impregnable, the Huns could not take it, and the Shu army could not be captured.

But in just a few days, Sima Jun learned the unparalleled strong attack power of the Shu army, those strongholds on the periphery are the fortress dock forts of the Gongwei Pubanjin, which are built quite strongly, and the Huns spent a lot of effort at the beginning, and they also failed to break through these dock forts, but they didn't expect the Shu army to remove these strongholds one by one in just a few days, and swept away the periphery of Pusaka.

These dock forts are like turtle shells, although the area is not large, but the construction is quite solid, all adopt brick and stone structure, layer by layer, there are archery holes left on the wall, there are corner towers on the corner of the wall, although each dock fort only has three or five hundred to seven or eight hundred guards, but the materials inside are complete, the grain and grass are sufficient, and it is difficult to take the dock fort by general means of attack.

What's more, there are many dock forts here, and they are at angles to each other, even if they are lucky enough to break through one or two, it is impossible to break through all the dock fort groups, and in the end they have to retreat. It was these dock forts that the Jin army used to prevent the Huns' attack on Pujin Pass, so these dock forts became Sima Jun's biggest reliance.

The Shu army did not use the means of strong attack in the attack, but adopted a relatively special method. Liu Yin learned that most of the dock forts here were only above-ground buildings, and no tunnels were built in the dock forts, and in order to quickly mobilize troops, most of the houses in the dock forts were connected.

At first, the Shu army also used the same method to attack Wubao, but with little success, Fu Zhu, Luo Xi and others had to return to Liu Yin. Liu Yin's eyes rolled, and he had a plan, and immediately asked Fu Luo Xi and the others to stop the attack, and instead went to raise saltpeter, sulfur, aconitum, croton, wolf venom, strychnine and other things.

They wondered very much, although saltpeter sulfur is the raw material for the manufacture of gunpowder, but under the current production conditions, it is almost impossible to produce powerful gunpowder, and ordinary low-explosive gunpowder is completely unusable in the battle of battle, as for those aconitum crotons and other things, it is even more incredible.

"Brother-in-law, what do you want these things for, does this have anything to do with the attack on Dock Fort?" Fu said suspiciously.

Liu Yin smiled slightly and said: "I have my own wonderful use for this, you will know when the time comes, go find these things, and it is best to have as many as possible." ”

Fu Zhi and the others were confused, but since Liu Yin had given the order, they didn't dare to disobey, and immediately went separately to find these things.

Fortunately, the things that Liu Yin wants are not rare items, such as saltpeter and sulfur, although the use is not too wide, but they are still sold in ordinary grocery stores.

As for aconitum, croton, wolf venom, and strychnine, these things are all herbs, which are sold in ordinary pharmacies, and Fu Zhu and Luo Xi each brought their men and horses, and searched widely in Anyi and Pingyang and other big cities, and because of the large demand, they almost bought out the grocery stores and pharmacies in the entire Hedong.

However, fortunately, Fu Luo Xi and the others were fair trades and paid according to the price, which did not cause turmoil in the market, but everyone in the cities of Hedong looked sideways, and they didn't know what the Shu army was doing when they collected so many medicinal materials.

Fu Zhi and the others were naturally at a loss, a few days later, these things were piled up in front of Liu Yin like a small mountain, Fu Zhi and the others stepped forward to give the errand, Fu Zhi said: "Brother-in-law, everything has been prepared for you, what is the use, neither can you eat nor use?" ”

Liu Yin smiled, of course Fu Zhi would not know that what he had to do was the first chemical weapon poison smoke bomb in history, this weapon was invented in the Song Dynasty and applied in the army, it can be thrown into the enemy camp during wartime, and the ignited poison smoke bomb will produce a large amount of toxic smoke, which can cause enemy soldiers to be poisoned and killed.

Although the fort was strong, it was surrounded by high walls and a small area, which could effectively kill and injure the Jin army or force them to surrender if poisoned smoke bombs were used.

Liu Yin ordered all these collected materials to be mashed, sulfur and saltpeter will produce a pungent smell when burned, and aconitum, croton, wolf venom, and strychnine are all poisonous herbs, and the poisonous smoke produced is deadly. Liu Yin mixed the mashed things together with tung oil to make a ball, and wrapped them with straw rope, so that a poisonous smoke ball the size of a person's head was made.

For the first test, Liu Yin chose a dock fort southeast of Pujin Pass, lit the straw rope and threw these poisonous smoke bombs into the dock fort with a catapult.

At first, the Jin soldiers in the dock fort didn't care about these poisonous smoke bombs, but when they smelled the pungent and choking smell, they immediately felt dizzy, coughing and tears, more and more smoke, and the enclosed space made these poisonous smoke have no place to spread, and many Jin soldiers bled from their mouths and noses and fell to the ground.

And most of the Jin soldiers covered their mouths and noses, choking and panting. In the end, thick smoke shrouded the entire dock fort, and it was so yellow that there were already no visible figures a few feet away, and more and more Jin soldiers fell into the poisonous smoke. In the end, the Jin army, which could not hold on, chose to open the door and surrender, and the Shu army captured the Jin army's unusually strong dock fort without spending a single soldier.

Next, the Shu army concocted the same method, and in less than ten days, it conquered more than a dozen dock forts scattered around Pubanjin one by one, and the weapon used by the Shu army was just a poisonous smoke bomb.

With the wonderful construction of poisonous smoke bombs, the Shu army actually achieved zero casualties in the attack on these dock forts, which can be called a miracle.

Just when everyone in the Shu army was amazed, Sima Jun was gloomy, and the outer forts that supported the entire Pujin Pass defense line were all lost, and now there is only one Pujin Pass left, whether it can withstand the attack of the Shu army, Sima Jun's heart also became worried, and the arrogance on his previous face was gone. (To be continued.) )