Yu Qiuping understands the horror of religious wars better than anyone else. He has seen too many fanatical religious believers in history books. These warriors armed with faith, even if they are unarmed, can often make the elite soldiers and generals who are armed to the teeth miserable.
Not to mention that Shishan Yufang is such a fortified city and there are so many iron cannons inside.
There were 7,000 casualties in the two sieges, and the Honganji side was estimated to have lost more than twice as many people. Such a large number of casualties was something Yu Qiuping had rarely encountered in so many years of fighting. He had some
It was unbearable, and he felt that he could not issue another "siege" order.
What should I do? The fortified castle of Ishiyama Gobo and the faith of Jodo Shinshu are two things that are combined into one, and I have no idea at all. If I want to conquer Ishiyama Gobo, I must solve these two problems.
Yu Qiuping put his hands behind his head and lay on the hill, looking at the sky, his memories drifting far away. He thought about the experiences of the past few days aimlessly.
Mori Changke, why is this child so naughty? Is it because of his father's death that he has been having a hard time feeling?
If I adjust the shooting angle during shelling, is it possible to have better results?
Why did the city want to block the city gate?
The ninjas of Crow who sneaked in when they released the prisoners have been hard to spread the news these days due to the martial law at Ishiyama Gobo. I wonder how they are doing?
When I was digging the trench that day, why couldn't the gunpowder I put in the trench explode to open a tunnel that was less than half a meter long?
Yes, hell, why can't it explode? Does it mean that yellow gunpowder must be used for blasting? Doesn't it make sense? The explosion principles of the two kinds of gunpowder are almost the same.
What is the principle of black powder explosion? Gunpowder burns to release a large amount of high-temperature gas, which causes an explosion due to excessive pressure? Yu Qiuping vaguely remembers that he seemed to have learned this equation in his chemistry class.
2kno3??s???3c?====?k2s???n2↑??3co2↑
Is it this? Are the numbers correct? Yu Qiuping can't remember clearly. He has returned all the specific trimming to the teacher. But he still remembers that the teacher said in class that 1 gram of black () gunpowder can produce
The volume of 70 to 80 liters of gas expands nearly ten thousand times. In a small space, the gas expands further due to combustion and heat, and eventually causes an explosion. This is the driving principle of iron cannons and artillery. Gas is produced by combustion,
The explosion caused by the expansion of gas in the chamber pushes the projectile out.
etc.
Yu Qiuping sat up immediately.
Small space.
Iron cannons and artillery can be fired by gunpowder because the barrel and barrel provide a small space for gas to expand and explode. Before firing, the gunpowder must be pressed firmly, which will be more effective - also because of the compression.
Space?
So my black() gunpowder blasting trenches failed because I piled them in an open space, surrounded by open space. All the gases burned by the black() gunpowder were emitted, so there was no big explosion, and there was no big explosion.
There is no way to blow up the tunnel.
If I had given the gunpowder a confined space...for example, I would have made a hole, stuffed the gunpowder in, and then blocked all the bricks on this side of the hole, just like building a brick wall like Shishan Yufang blocking the door - wouldn't it have created a
Is it a confined space? Can such explosions blow up the tunnel?
etc.
Yu Qiuping suddenly stood up.
Come.
Was it just the tunnel that exploded?
·
That night, Yu Qiuping woke up the engineer captain Oshionaka Saburo and asked him to immediately search for the materials Yu Qiuping needed. At the same time, he also discussed with Takenaka Shigeharu and Fukuzawa Yunan and persuaded them to try Yu Qiuping.
Qiuping's crazy plan.
Early the next morning, outside the south city of Shishan Royal House, a large-scale civil engineering project was under construction on the Hongye Army's position. Morinagako led his guards to patrol the battlefield early in the morning, and happened to see the construction in full swing on the Hongye Army's position. He was curious on the ground
asked before.
"What is this for?" Chief Mori called over an engineer and asked, pointing to the construction site.
"Your Highness wants to build an altar." The engineer saw that he was a senior warrior and told him honestly.
"Altar?" Morinagako laughed and said, "Why, this Yuqiu Hongye Guizhou donkey is so poor, do you want to pray for thunder to collapse the wall of Shishan Royal Square?"
"My lord, that's right." The engineer bowed again and replied honestly.
"Ah?" Sen Changke was stunned when he heard this, "What."
"Uh..." The engineer was also a little embarrassed, but he still repeated what Yu Qiuping said, "His Royal Highness wants to pray for thunder to collapse the wall of Shishan Royal Square."
Mori Changke stared at the engineer for a few times, and when he saw that the latter had no intention of changing his words, he slapped him in the mouth in anger and knocked the engineer to the ground.
"Are you kidding me?" Mori Nagako pulled the knife out of its scabbard and shouted angrily at the engineer, "Are you kidding me?"
"No, sir, sir!" The engineer's legs were so frightened that he kowtowed in apology, "Your Highness really said that!"
"Looking for death." Sen Changke sneered, and raised his hand to chop the engineer with a knife. At this moment, a scolding came in his ears.
"Stop." Yu Qiuping, who arrived on horseback at an unknown time, scolded without any doubt, "No matter what the reason, you are not allowed to kill people at will, let alone those who are my subordinates!" As soon as the engineer saw Yu Qiuping coming, he hurriedly said
He stood up and hid behind Yu Qiuping.
"The guy said you were building an altar and praying for thunder to knock down the wall of Shishan Royal Square." Chief Sen pointed his knife at the engineer behind Yu Qiuping.
"Yes, that's what I said." Yu Qiuping smiled and nodded.
·
Soon after, Sen Changke followed Yu Qiuping on horseback to the back of the altar. Inside the huge altar construction site, there was a hidden cave that was being excavated, and it had already been excavated for quite some time.
"You want the earth dragon to attack? Use the altar as a cover?" Sen Chang finally understood what Yu Qiuping meant.
"Yes." Yu Qiuping pointed to the cave.
"Then can't you come up with a better excuse to cover up? Building a main formation is better than building an altar. Will the other side believe it?" Morinagako pointed in the direction of Shishan Yubo in an angry and funny tone, "You
Do you think the other person is a fool?"
"Those are all believers in the Pure Land Shinsect. How could they not believe in the altar?" Yu Qiu shook his head confidently.
"Those idiot believers will naturally believe it, but those high-level executives are not fools. They can tell at a glance that you are a Earth Dragon Attacker." Morinagako criticized mercilessly.
"I don't need those high-level letters, just those
As long as the believers believe that I am building the altar, it will be fine." Yu Qiuping's confident smile remained unchanged.
"Are you really at your wits' end, thinking of using Earth Dragon Attack? Are you making such a big show of it?" Mori Changke was already laughing from ear to ear, "The other side can tell at a glance that you are using Earth Dragon Attack. They just need to dig a ditch slowly and leisurely.
, wait until you dig under the city in ten days and give you some water, and your work will be in vain."
"It won't take ten days, I can do it the morning after tomorrow." Yu Qiuping raised his eyebrows at Sen Changke, and then nuzzled his mouth towards his tunnel. Sen Changke took a closer look and discovered the tunnel dug by Yu Qiuping.
It's very narrow, so digging is naturally much faster.
"Your tunnel is too narrow." Sen Changke shook his head and sarcastically said, "Whether it's the Tulong attack that sends troops into the city or the Tulong attack that transports wood and burns down the city foundation, it's too narrow.
It's too narrow. People can't get in, the wood is not good, and the ventilation is not good. Even if you dig it for two days, what's the use? Isn't it the same as having an extra earthworm?"
"You'll know the day after tomorrow whether it's useful or not." The unwavering confidence on Yu Qiuping's face puzzled Sen Chang. After noticing the latter's expression, Yu Qiuping gave Sen Chang another incomprehensible answer.
Understanding explanation:
"Learn mathematics, physics and chemistry well, and you will not be afraid of traveling all over the world."
At the same time, at the head of Shishan Yufang City.
"Build an altar?" Shimo Lai Lian sneered at Yu Qiuping's actions, "Who would build an altar here? This is obviously an attack by Tulong. Make arrangements to dig a canal inside the south gate of Shinomaru."
"Yes, I'm going to find someone right now." The monk next to Lai Lian in the next room responded in a low voice.
"No, there's no need to rush." Lai Lian from the lower room waved and called the monk back, "It will take at least 10 days to start digging from that distance. It will be too late to dig after they start transporting wooden piles inside. If they
If we stop digging halfway through, our water channel will be in vain. Let’s take a look first, and just to be on the safe side, we will start construction in five days.”
·
One day later, on the evening of November 29, the seventh year of Tianzheng (1579), Yu Qiuping personally went down to the tunnel to check the final deployment. The engineers of the Hongye Army worked in three shifts overnight, and completed the long and slender tunnel in two days.
We dug into the city foundation below the south gate of Shishan Royal Square.
At this moment, the engineers are sending the blasting container that Yu Qiuping made before into the end of the tunnel - it is a large wooden rectangular parallelepiped. The side facing upward is very wide, and the side facing the tunnel is the smallest. This is
Yu Qiuping set the shape according to the pressure and pressure. This wooden box was filled with a mixture of evenly stirred gunpowder and other explosives. It was bulging, leaving no space at all.
Yu Qiuping directed everyone to push the wooden box to the innermost position and insert a small hole specially dug for the wooden box. The length, width and height of the small hole were determined according to the wooden box. After being stuffed into the wooden box, there was almost no gap at all.
Only a tiny bit of air was left. Then, Yu Qiuping began to arrange the fuse. Basically, he followed the fuse used in the last trench blasting, using black powder and hay rope as the fuse, and wrapping it with cotton cloth.
, another layer of oil was applied, and the fuse was connected all the way from the wooden box to near the entrance of the cave.
After that, Yu Qiuping began to build the sealing layer. He asked his subordinates to learn from Shishan Yufang's method of blocking the city gate and build a wall to seal the hole. They started from the small hole where the wooden box was, building the wall layer by layer, each time
Only the tiny gap of the fuse is left in each layer. The walls of each layer are close to each other and are built very solidly. They are built layer by layer outwards, almost filling the entire tunnel, all the way to the entrance of the cave. Red leaves
The army's engineers worked all night and finally completed the deployment before dawn.
Yu Qiuping, who was very tired, hurriedly went to catch up on his sleep. After all, he would still need to perform emotionally tomorrow morning.