Be a Good Husband and Do as You're Told

“Ancient setting, transmigration, the heroine comes from the apocalypse and knows martial arts, the hero is expressionless and cold, she pursues him at first, then things turn around later, with a little angst...” Lin Mengwan, a middle-aged woman who had lived through the apocalypse, accidentally died and transmigrated to ancient times. She was a young peasant girl, and soon after transmigrating she ended up in a tumultuous encounter with a man. Once they were done, he dusted himself off and left, saying only, “I'll take responsibility,” before vanishing. Then came all sorts of amusing incidents while fleeing famine during a year of disaster. She took a prince as her disciple, was granted the title of county lady by the current emperor after growing corn, and gave birth to a little boy with a perpetually expressionless face. Three years later, when her princely disciple returned to the capital, what kind of upheaval would follow? This blurb can't do the story justice, so please read the novel itself. Thank you!