One Day, I Became an Old Marquis

Lu Jin transmigrates from the apocalypse and wakes to find himself in the body of a marquis who has been bedridden in a vegetative state for half a year. As soon as he wakes, a woman rushes in and kneels, weeping. "I beg you, Marquis, please decide this matter and save the child in my belly. That's your eldest grandson!" Lu Jin: "..." His brain freezes. In his previous life, he became a dad without knowing how. Now he's a grandpa? The original owner was a hedonistic old marquis, barely over thirty, with a sixteen-year-old eldest son born to a concubine. The woman before him is that son's bedchamber attendant. And that's not all. He also has more than a dozen children of various ages! The enormous marquisate has no lady of the house, and all the children have wet nurses. He has the good fortune of experiencing the chaos of a large household, complete with wet nurses raising children and domestic scheming. *Infrastructure-building story* Premise: As long as life goes on, keep striving.