Maxed-Out Comprehension: From Shop Assistant to Immortal and Undying

When Yang Xiao wakes up, he has transmigrated to another world and become a lowly, slave-registered waiter at the Vermilion Bird Tower in the Great Yan Dynasty, as insignificant as a speck of dust. Fortunately, his comprehension is maxed out, though he has no aptitude for cultivation and his talents are utterly ordinary. In this world, immortals and demons coexist, nations vie for supremacy, and martial arts flourish. Yet the Vermilion Bird Tower, located in the capital of the Great Yan Dynasty, is a rare sanctuary. Yang Xiao keeps his identity hidden at the Vermilion Bird Tower, spending sixty years honing a single sword as he watches spring pass into autumn and tides rise and fall. Sixty years later, demons storm the city, and blood rain pours from the heavens! As the Sixth Princess and the Great Yan Emperor kneel before the Vermilion Bird Tower, weeping and begging the master inside to save them, with a million lives hanging in the balance, a sword shoots skyward from the Vermilion Bird Tower. Sword energy stretches for a hundred thousand miles. With one sword, the Nine Provinces freeze!