What is the regret of history? This is an epic about ambition and destiny, a tragedy of the end of a hero, and the endless confusion left by individuals who have been swept away by the torrent of history in their choices. When the flames of Xianyang Palace illuminated the night sky, those unfinished ideals, misplaced loyalties and missed opportunities all turned into questions that penetrated time and space - if the Sand Dune Change had never happened, if Fusu dared to disobey his father's orders, could Da Qin avoid the destined ending?