In the fourth year of Daguan, with a scream, a teenager fell from the sky in front of four naughty children, and since then there has been a variable in this world. This year, Cai Jing left Tokyo, Gao Yanei had not yet learned to flirt with his wife, the strong man in the white mountain and black water looked at the sky arrogantly, Yelu Yanxi kept rushing to the next hunting place, and the palace in Kaifeng Mansion was full of exotic flowers and plants and birds and beasts transported from the south of the Yangtze River. This is the best era, this is not called Your Majesty, this is the era of the official family, this is an era of flying literary brilliance, this is an era of steel production exceeding the whole of Europe, this is the peak era of Chinese civilization. This is the worst era, an era in which a piece of paper can go bankrupt, a field can be lost with a single stroke, an era in which heroes are tortured to death by unwarranted words, and an era in which Chinese civilization has fallen into the beginning of darkness. With variables, will everything still be the same? A Crowd (1937): 464970199