Longevity: Starting from the Step-Sister-In-Law

Zheng Song accidentally traveled to the world of Xianwu and became a penniless fisherman in a small village. Unfortunately, his brother died early, so his sister-in-law, who had only been married for three days, had to adopt him according to custom. Zheng Song could tell at a glance that the beautiful sister-in-law had a vicious heart, and wanted to resist on the spot, but accidentally awakened the system [Scum Diagnosing Manual]! It turns out that as long as you make the scumbag regret and look at you with admiration, you can add unlimited points until you live forever! "Sister-in-law, I want you to help me practice!"