Alien Species Arrives, Witness the Death Scene at the Beginning

One day in the future, the Earth will accidentally receive a message from an extragalactic galaxy: Three years from now, we will set foot on this beautiful planet. Before that, bugs on the Earth please enjoy every day, because we will ensure that there will be no bugs on this planet on the day we land! Just after the warning was issued by the extragalactic galaxy, the whole world began to build a human *** under the proposal of country Z. The "purification operation" of alien civilization has begun. There is no budget and no preparation. Teleportation doors have begun to appear in some parts of the world. Human beings call them "wormholes" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.