When it comes to the four major inventions, it is indispensable to papermaking, and the important person related to papermaking is Cai Lun. Cai Lun, born in a blacksmith family, but did not engage in blacksmith work, entered the palace after the age of 18...
11-21
In the second year of the yuan dynasty (115), Qiang soldiers besieged Wudu (武都, in modern Chengxian County, Gansu), and the situation was critical again. Since Yu Xue was such a cattle, Empress Deng simply promoted him to wudu taishou and let him...
11-09