I Died Ten Seconds After Transmigrating, So I Help the First Emperor from the Underworld

Li An, a history student, transmigrates to the end of the Qin dynasty and awakens the strongest support System. He immediately binds himself to his sovereign, Ying Zheng, the First Emperor of all ages, forming an invincible bond of absolute trust and shared life and death! Thinking he had latched onto the greatest backer of all time, Li An expected to help the First Emperor defy fate and prevent the Qin dynasty from falling after just two generations. But on the very day they bonded, the First Emperor died at Sand Hill! Li An had been in this world for only ten seconds before he was buried alive alongside Ying Zheng, dying with him! When they opened their eyes again, the mortal world had ended. Together, they had fallen into the eternal netherworld, where heroic spirits dwell beyond the cycle of reincarnation. The spirit of Qin and Han, the upheavals of the Three Kingdoms, the golden ages of Sui and Tang, the great writers of Song, the glory of Ming... Countless heroes of China crossed a thousand years of division and gathered in the netherworld. With old dynastic feuds forgotten, they all honored the First Emperor as their sovereign! At that time, the netherworld was ruled by a corrupt, despotic underworld court. Asura hordes ran rampant, while Western gods carved up the realm and lorded over it, treating China's heroic spirits like lowly wandering ghosts to be oppressed and slaughtered at will! The unfinished ambitions of the mortal world would all be fulfilled in the netherworld! Ying Zheng became the eternal emperor, commanding the universe and keeping the gods in check! Li An became the eternal sage of strategy, planning from behind the scenes and securing the world! Bai Qi, Han Xin, Huo Qubing, Li Jing, and Yue Fei hunted demons and slew gods, conquering the lands beyond! Zhang Liang, Xiao He, Zhuge Liang, Guo Jia, and Liu Bowen devised plans for the ages, bringing peace to the land! From two men carving out a foothold and building a city in the wilderness, to unifying the Eastern Netherworld and marching west to conquer the divine courts of every nation! Slay the Yama Kings, crush the Asuras, and wage war on the gods! Rebuild the order of the netherworld and forge an everlasting divine dynasty of China! As long as China's cultural legacy endures in the mortal world, its heroic spirits will live forever in the netherworld. Across the heavens and ages, China alone shall reign supreme!