I Rely on Science to Build Infrastructure in the Fairy World

A doctor of materials science transformed into a wasted concubine in the world of immortality. Faced with a desperate situation where her spiritual roots were shattered and her family bullied her, she took out the cement formula and built roads first, then generated electricity. She used scientific infrastructure to fight against the metaphysics of immortality, but she accidentally made the heart of the cold immortal king her "strongest backing".