Doomsday Star Empire

One year before the end of the world, Lin Mo discovered that everyone was kept in the dark. Global tsunamis, continental ruptures, volcanoes blocking the sun - governments have long known about it, but chose to block the news. He didn't try to be a savior. He silently registered a shell company, used his parents' inheritance to buy an abandoned coal mine, and then began to stockpile supplies - thousands of tons of grain, hundreds of tons of diesel, and enough medicine for 300 people for fifty years. Everyone thought he was crazy. Until the day when the end came, his ark sailed out of the mountain. While others were grabbing cans in the ruins, he was growing vegetables. While others are being chased by monsters, he is developing electromagnetic guns. Others are surrendering to alien civilization, and he has transformed the entire earth into planet-level weapons. Starting from a bomb shelter, to the stars and the sea.