A Martyr's Orphan Transmigrates Through Time to Strengthen the Nation with Science

Fictional setting! Fictional setting! Golden finger, pocket dimension, transmigration, scientific genius. In 2075, top scientist Chen Shanshan is murdered by foreign enemy agents. When she opens her eyes, she has transmigrated to 1973, becoming the orphaned daughter of a fallen hero, mistreated by her stepmother and on the verge of starving to death. Her birth father died serving the country, his compensation was stolen, and her betrothed, Xiao Jingchen, was stationed at an island military base far away. Treated as a burden, she was tormented to death. She returns with a renewable London manor pocket dimension. From the start, she tears into her wicked stepmother, reclaims all her property, and sets off alone for the island to find the contract husband she's never met. The steely battalion commander Xiao Jingchen had felt deeply guilty about their arranged marriage, but her extraordinary talent soon won him over completely. She builds a distillation system to solve the island's freshwater crisis, develops advanced weapons to strengthen coastal defenses, breaks foreign monopolies on rare-earth technology, helps launch the country's space program, and wipes out foreign enemy networks. From an orphan, she rises to become a pillar of the nation. He bows to her, becoming her strongest shield. Together, they use science to build a powerful nation and unwavering courage to protect their home, staying by each other's side for life.