An accident occurred while studying a mysterious Tang Dynasty alloy in the laboratory. When he woke up, he became a down-and-out scholar outside Chang'an in the fifth year of Zhenguan. His parents died and he was preparing to seek refuge with his relatives.
He was penniless, had no relatives, and knew nothing about the complicated household registration and etiquette of the Tang Dynasty.
Scientific thinking, materials knowledge, basic physical and chemical principles that transcend the times, and the ability to "predict" the general direction of history.
