The Mausoleum Bureaus were elevated to Terraces in the thirteenth year, and the five Bureau heads of Xian, Zha…
The Mausoleum Bureaus were elevated to Terraces in the thirteenth year, and the five Bureau heads of Xian, Zhao, Qian, Ding, and Qiao were promoted by one grade. Thereafter, all Terraces were so named.