I Am a Small Person, but the Country Asks Me to Fight Against the Doomsday

[Reborn Cube Man + Doomsday + Infrastructure + Explosive Stockpiling of Supplies + Explosive Soldier Summoning + 365 Days of War Preparation + Magic Modified MC] In 2250, a giant light gate appeared in the Eastern Land, and a square man wearing colorful clothes and carrying a fishing rod came out. … My name is Fangzheng, and I am a happy cube person. This is my thousandth year in the cube world. I have experienced brutal pixel wars, faced the World Eater, and defeated the Slime King and the Ice Giant. Today, as a retired person, I was holding a fishing rod and preparing to go fishing when I suddenly came to this strange world. Looking at the mysterious crack in the sky, I solemnly said: "Your end is coming." At this point, a cross-dimensional two-way transaction was officially concluded. Dongfang announced its seclusion and sent more than one billion manpower into the cube world to help it build a super army to fight against the doomsday. The cube fortress rises from the ground, the meteorite rail gun is ready to go, and the obsidian giant wall stretches thousands of miles! One year later, cracks all over the world opened, and the end came. The hundred-meter giant beast crushed the Western defense line. When countries all over the world were wailing, the Eastern Charge resounded in the sky! The cube soldiers pushed against the monsters, the iron golem phalanx crushed the giant beasts, the pixel fire dragon and the cube battleship hung in the sky... At this moment, people all over the world were shocked: "How can this be the end of the world? This is clearly a mindless push from the East!"