I Am the Greatest Emperor of All Time

[Alternate history + transmigration + political intrigue + wars of supremacy + no System + inventions] A top military academy student transmigrates to ancient times, only to become the dim-witted, intellectually disabled Second Prince. At this moment, 158 generals of the Great Ying Dynasty have fallen in battle, and its army of 500,000 has been wiped out. The empire is on the brink of collapse, and the nation is about to fall! The foolish prince is forced onto the throne to take the blame, but with the support of his exceptional imperial sister-in-law and modern military strategy, he defies fate and changes his destiny! With the Supreme Sword in hand, he leads a thousand cavalrymen to shatter an army of ten thousand, drinks deep of barbarian blood, and conquers Helan Mountain! Awake, he commands all under heaven; asleep, he rests in the arms of beauties. I am an emperor for the ages. None of you dare disobey!