Virtuous King and Fairy Concubine

She has special powers but doesn't know it, and is obsessed with refining medicines and weapons; he is a genius but doesn't want brothers to kill each other and become useless. She met her spiritual pet by chance and treated him like a lovely best friend; he was favored by the green dragon beast and treated him as a confidant. She travels in the countryside, but her temperament is unearthly, and her beautiful appearance is difficult to hide; he is the proud son of heaven, but he wants to stay away from the imperial city. Her father didn't like her, but her brother and mother-in-law regarded her as a treasure; his biological mother gave him a death order. How a time-traveling medical woman and a "waste" man build a new world and travel between heaven and earth