“A history prodigy transmigrates as the grandson of a former Sui official? No System, no magic, just an encyclopedic knowledge of the prosperous Tang and a photographic memory, yet he carves out a lawless life in Chang'an! At a poetry gathering, he rewrites ‘Bring in the Wine’ to mock sour scholars as ‘more sour than aged vinegar.’ At a gambling den, his abacus flies as he wins a brothel tower in Pingkang Ward. He solves an old canal worker's shipping dilemma with a ‘street vendor's abacus.’ He Zheng slaps his thigh and laughs, ‘This boy has promise!’ At Li Linfu's birthday banquet, one doggerel poem sends all nine gates into an uproar! The world calls him a laughing marquis and a living menace, unaware that beneath his carefree antics lies a clear-eyed understanding of the An Lushan Rebellion. Watch Su Yan use street-corner comedy to dismantle powerful ministers' schemes and folk songs to rally the frontier troops, becoming Chang'an's most irreverent champion as the golden age begins to crumble!”