A leisurely life in

"Comrade Li Yuan, please explain the mechanism behind women's menstruation.",Across the table stood a tall and slender young man, around twenty years old. He was handsome with a humble and gentle gaze, though lacking the youthful vigor and ambition that one would expect of someone his age in this era...,Let a modern person return to seventy years ago, whether it's back to the countryside, the initial days don't mention how awkward.。