The Road to Counterattack by Dressing up as a Cannon Fodder Old Lady

She was originally a botanist with a promising future, but once she transformed into an ancient old lady, someone else's ancestor, she was still a dope and cannon fodder. But here she is. She led the whole family to make money to build houses, open factories, improve rice seeds, educate their children and grandchildren, and also led the whole village to escape the war... She is no longer an ancestor, but she has become a grandson.