The Whole Family Is Loyal, I Am the Number One Evildoer in Daqian

I was born as a general, but I was blind. My whole family was loyal and courageous, and I died in battle, so my family was in ruins. On the day of the funeral, my fiancée came to break off the engagement, but six beautiful sisters-in-law who had not yet married me wanted to marry me, and the whole city laughed at me. But they don't know that during these three years of blindness, I have quietly become invincible in the world. I am heartbroken. Who in the world can rival me?