I guess there's the reason why the MC was always on the run in the previous life and unknowingly NTR'ed wives of some OP beings. You still have no sense of propriety, Su Yang. Looks like the lesson in the past life wasn't enough. XD
I can give a decent massage for around two or three hours before my hands will start to become too tired to function or start cramping. 12.5 hours (or more than that beforehand), that's some insane hand strength/skill and dedication.