1970s: Becoming the Good Granddaughter of a Partial Grandma

[Book Transmigration + Space + Farming + Sweet Love Story] A 21st-century Xuanmen young master accidentally transmigrates into a period novel, becoming a cannon fodder killed by a wild boar at the very beginning. As for the heroine, who exudes a strong White Lotus aura, Hua Jiaojiao expresses dissatisfaction. She must survive in this era anyway, so why not use those talisman-drawing and spell-casting hands to eliminate the original heroine, slaughter wild boars, cook delicious food, protect her beloved family, and completely change her tragic fate, living a carefree and unrestrained life in this new 1970s? As for the male protagonist, who constantly flirts with her, what's up with him?