Zaimu

Domestic pig Hui Zai witnessed a sow being sent to a slaughterhouse to be slaughtered upside down, and luckily escaped into the mountains. He learned to survive in the wild with a herd of wild boars. He was chased by human shotguns on a snowy night and fell off a cliff. When he was about to die, he was saved by a higher civilization visiting the earth. On the grounds that "large-scale captive slaughter of sentient beings violates interstellar ethics", higher civilizations judged humans to be a predatory species and transformed Gray Boy into an enforcer on Earth. Gray Boy relied on his cross-species communication capabilities to call for a collective shutdown of livestock and poultry around the world: chickens stopped crowing, dogs stopped barking, cows stopped producing milk, and pigs went on hunger strike. Human society gradually fell from daily failure to global paralysis. When all human force has failed and the sky-covering giant ship hangs overhead, Gray Boy returns the rules that humans have imposed on animals, allowing those who stand on the outside of the wall with peace of mind to experience firsthand what it feels like to be in captivity and have their destiny arranged.