Starting with a Scumbag Father, I Wiped Out the Whole Family
When Yan Ning, in her chuunibyou phase, dripped blood onto her personal jade pendant to recognize it as her master, she transmigrated into a book, arriving in the 1970s through the pendant.
Right at the start, she was about to be sold by her biological father and stepmother for their career advancement. Without hesitation, she set a trap and wiped out the entire family. She inadvertently gained a spatial ability and discovered that the jade pendant that caused her transmigration was a medium to a portal to the 21st century.
From then on, Yan Ning began traveling between two parallel worlds, exchanging goods to make money and becoming a "shuttle trader." Along the way, she bought houses, land, and built her career... Original novel's heroine and hero, back off, don't get involved! Annoying men, greasy men, confront them, argue until they doubt their lives! What? There's a handsome young man too? Sorry, sis cultivates the Path of Ruthlessness; men only slow down my money-making speed!