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What do you do when you’re outgunned on the battlefield? You get creative.

In this stunning 3D animated short, discover how Chinese soldiers during the Anti-Japanese War invented the legendary “Earth Cannon”—a homemade rocket launcher built from barrels, clay, and sheer ingenuity. Watch as we break down its clever design, explosive power, and battlefield impact—all in under 2 minutes!

✅ Learn the science behind the cannon’s launch mechanism
✅ See how it compensated for lack of heavy artillery
✅ Witness the devastating effect on enemy positions

If you love military history, wartime innovation, or jaw-dropping engineering feats—this is for you.

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Transcript
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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