Thanks for the chapter!
Gee, typical big shot. Of course it's a great honor to become a slave of some spoiled brat who will abuse you, use you as a gopher/stress reliever/punching bag, and work you to the bone believing that serving him is a priceless treasure and the worthless scraps doles out is more than person could ever get themselves and should be extremely thankful. And of course being a branch family of a city nowhere near as respondent as the capital he won't bother helping with anything but himself at the family's expense. Seems reaping the benefits while shirking responsibilities is considered the status of a high rank noble with the concept of noblesse oblige only pertaining to how others are responsible for kissing their ass. As for the benefits he's mentioning food might be better but still that of a servant at the servant's table, cultivation will be low grade so not a threat to main family with castoff reagents.
So basically Lin family joined with the Iron Wolf clan, and the traitorous elder was a member of the Lin family who teamed up on family's orders. Now the Wolf Clan is planning on stealing everything from Yun family with quantity against quality in forces. In any case, I wonder if the young master from the main family is going to bother doing anything or make excuses and run away.