00:00If a group of devils attack you, then you can send them all to hell with the explosives in your hand
00:04and let the king of hell judge them for their crimes in China.
00:07But what if the devils hide in the bunker to cover us with fire?
00:10Without heavy artillery, it is impossible to throw explosives into the enemy's position with close manpower,
00:16so you think of the ancient red-clad cannons.
00:19Theoretically, as long as you fill an iron pipe with gunpowder and explosives,
00:23and then light the gunpowder in the middle to isolate the heat,
00:26you can fire the explosives and blow up the enemy's bunker.
00:30But now there is a fatal problem.
00:32That is, due to the backwardness of our army and industry, it is impossible to mass-produce usable barrels.
00:38But this is not difficult for the smart you.
00:40You tamp the soil on the flat side of the position,
00:43and then dig out an open slope with a depth of half a meter and an angle of 40 degrees.
00:48Then, at the bottom of the slope, dig out a horizontal groove where the projectile package can be placed
00:54so that the kinetic energy generated by the explosion can be preserved to the greatest extent.
01:00After installing the projectile and igniting.
01:02In order to facilitate ignition, you can also extend the ignition rope of the projectile to the pit wall to the ground,
01:08and then the cattle backfill some clay on the slope and tamp it to prevent the explosive from being ignited in advance.
01:14At this point, you can hold the explosive pack tightly against the clay.
01:18However, before launching, you can also extend the lead of the explosive detonator and finally tie it to a wooden stick on the ground
01:25so that when you ignite the propellant, the explosive pack will ignite the detonator when it flies out,
01:30thus accurately controlling the time of the explosive explosion.
01:34This is the earliest earth cannon used by our army.
01:37Although this method is a bit crude, it is extremely effective.
01:40The only drawback is that the sealing of the soil is poor.
01:43After each launch, the soil pit will be damaged by the sugar pressure generated by the explosion.
01:48Therefore, you find the gasoline barrels captured on the battlefield to serve as a carrier for pushing the explosive pack
01:55and reinforce them with iron hoops to prevent bombs.
01:58Finally, the barrels are buried into the soil pit to stabilize the barrel and reduce the recoil.
02:03This not only greatly improves the range and accuracy, but also can be taken to other battlefields for repeated use after the battle.
02:10After doing this, then congratulations.
02:13You have created the heavy artillery rocket gun independently developed by our army during the anti-Japanese war.
02:19The range of the rocket gun is roughly between 100-200 meters, and each time it can fire 10-30 kilograms of explosives.
02:26In the era when there were few guns, the lightning cannon not only filled the gap in our heavy firepower,
02:31but also gave us the ability to confront the enemy head-on and take the offensive.
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