Unknown signals spread unscrupulously throughout the universe on free microphones until they enter the earth and are received by humans.
Adventists: "This is a gift from higher civilization and an opportunity for human evolution." Pessimists: "This is a signal before aliens invade." Science fiction enthusiasts: "They want to enslave all mankind." Faced with An unknown and powerful cosmic civilization, Earth launches a referendum.
The final vote of all humanity was finally announced: "Keep silent and don't answer."
"..." At this time, on an unknown planet far away in the distant universe. Wang Wei was guarding his alien farmland, eagerly waiting for a reply from his fellow earthlings.
"Is anyone there? Pay attention to me!"
"At least someone can tell me how to grow these alien potatoes!"