Reborn as the Doomed White Moonlight, I Found My Happy Ending with the Villain

An old work, and not very well written. [One-on-one romance, both leads are each other's only partners, transmigrate into a book + System + pocket dimension + infrastructure building + ancient disasters + everyday life] The main focus is on developing infrastructure, farming, and building local power. Content warnings: Not a traditional farming story, no domestic squabbles; marriage first, love later. After transmigrating, Yao Anlan and her whole family are demoted. She finds herself inside an ancient palace-intrigue novel, as the male lead's doomed first love. When she opens her eyes, the emperor has already issued an edict. Her whole family is forced to accompany her north, where she must marry the unlucky Third Prince, a villain who is unloved by his parents and fighting on the frontier. Yao Anlan's response: If I can't have a comfortable life, then no one gets to live! With the help of her System and pocket dimension, she improves crop varieties, introduces advanced technology, and helps the people of Hanzhou survive every disaster with full stomachs and warm clothes. And then... She returns in triumph with her husband in name! (A hot-tempered, battle-loving heroine who flies off the handle at unpredictable times X a stunning hero who's refined on the outside and a total psycho within.)