Comments of chapter undefined of Village Head's Debauchery

The grandmother must be 60?, since if she had her daughter at 19-20, her daughter had the mc 19-29, and the mc is going to turn 19, then the grandmother should be approaching 60, the better would have been The mc's age is 16, and it feels strange that someone almost 19 years old acts like the mc, he looks like a 10-12 year old, but if the grandmother still has a good body and doesn't look as old as she is, then how much Is their life expectancy? 150, 200, 300 years? Are they half-elves or some rare lineage of a long-lived species? Also, since they have almost no wrinkles and some silver strands in their hair, this would indicate that their grandmother actually She is more beautiful, and she would only have the small wrinkle due to the life she has, the lack of better nutrition, lack of skin care, etc., and the locks of white hair would be due to the stress they live with that they have to survive, yes If they had a better quality environment to live in, they should look like they were 20 years old then, and I guess they live a long time.