Best Soldier Son-in-law

*He was the absolute king of the mercenary field, AKA, "The Reaper." Just his name alone was enough to scare the enemies off! He also possessed astounding perfect medical skills, saved countless lives in the battlefield.
When he returned, he becaming the matrilocal son-in-law of a third-tier rich family by some coincidence.
Who said that a matrilocal son-in-law had no dignity?
For Lin Nan, he will become the ruler in this city even as a matrilocal son-in-law!