Phase Transformation in the Tang Dynasty: a Family Experiment in the Ninth Year of Wude

In the ninth year of Wude, materials researcher Wenxuan and his accountant wife Lin Ling accidentally landed in the early Tang Dynasty with their five-year-old son Xiaoxiao. They don't have stunning looks, and they don't have a golden finger in the system. They just want to guard the fireworks in the small courtyard in troubled times, waiting for the possibility of returning home. But the killing situation in the East Palace is approaching step by step, and the blood of Xuanwu Sect is close at hand. In order to prevent the newly cooked hot porridge from getting cold, Wenxuan took out the material science at the bottom of the box and refined steel that was beyond the times; Lin Ling found out the double-entry bookkeeping method and sorted out the Qin Mansion's accounts clearly. They never thought about assisting anyone to become emperor, they just wanted to keep the lights in this yard always on.