The Good-For-Nothing Male Protagonist Becomes Stronger by Touching His Corpse

I used to be the proud son of the sect, respected by everyone. He was stabbed in the back by his brother, his Dantian was shattered, he was reduced to a useless person, and he was thrown into a rocky valley to feed the monsters. I thought I was certain to die, but I unexpectedly awakened the Bone Divine Art! The dead bones everywhere are all my chance!