I can't remember the name, but it was about this one orphan who had a cultivation technique that left his physical body in a retarded state. His "grandfather" set up his marriage with this girl from one of the big clans of the town or something, and no one was really happy about it. He was taken care of by the girl daily (because she thought "he's stupid but he's my responsibility"). I cannot remember the title, or where I read it, and all my searches turn up duds, so... help please?
It's totally Spirit Realm. MC is Qin Lie who was in passive state becuz of the his cultivation method and the female lead is Ling Yushi.