The tunnel in the film looks ordinary, but it has magical power. It connected the surrounding villages and became a solid anti-Japanese force. What's more worth mentioning is that they managed to pass through the tunnel under the enemy turret, which provided favorable conditions for bombing the turret later. At the same time, these tunnels are full of institutions, like a maze. Even if the enemy finds out, they can close the door and beat the dog, beating the Japanese out of the water. Moreover, these tunnels are waterproof, fireproof and virus-proof, and even people hiding in the tunnels will be safer.

Encourage children to study harder, grow into a selfless person, think more about others and maintain peace with practical actions.