AD 755, Tianbao's fourteenth year.
Cheng Zhibai, a doctor of history, woke up and found that he had traveled through time - not as an emperor or general, but as Guo Ziyi's second son Guo Yuan, an unknown person who only had the words "died in Xiangzhou in battle" in the history books.
What's even more deadly is that there are only twenty-seven days left before the Anshi Rebellion breaks out.
He knew that An Lushan would rebel, knew that the Tang Dynasty would fall into eight years of war, and knew that the glory of the prosperous age would be reduced to scorched earth. But he couldn't say. A dandy with a broken brain suddenly predicts that "An Lushan will rebel", and he will only be regarded as a madman.
He could only lay out the plan bit by bit - laying foreshadowings in his family's books, collecting evidence in the dark, and looking for allies in the cracks. When the news of the 150,000 cavalry heading south reached Chang'an, everyone was caught off guard. Only he was prepared.
From Chang'an to Taiyuan, from a playboy to a soldier, from "knowing history" to "changing history" - Guo Yuan has to do more than just survive. He wanted to make the prosperous Tang Dynasty die two hundred years late.
