What is the title of the novel where the main character is Ye Xuan and he is blind?

"I became blind at the beginning and was saved by the empress." Ye Xuan traveled to another world, but unexpectedly became a blind man and was in a caravan that was robbed by bandits. It happened that an empress passed by at this time and rescued Ye Xuan. Because she was born blind, she became a member of the guard of the palace library. It coincides with the awakening of the sign-in system at this time. You will receive various rewards by signing in at different places. From then on, Ye Xuangou stayed in the palace of the Empress. Many years later, when the rebels came to the city and the empress was no longer able to fight and was about to fall into the hands of others, Ye Xuan appeared and killed a million divisions with one sword. The battle shocked the world.