Introduction to Hanyang Mausoleum: The height of the tomb of Emperor Hanyang Mausoleum is about 31 meters, the bottom of the mausoleum is 160 meters long, the top is 54 meters from east to west, and 55 meters from north to south. The cemetery is square with a side length of 4l0 meters. There is a door in the center of each side, evenly spaced. The imperial mausoleum is 110 meters long. The drilling discovery and trial excavation of 86 burial pits in the imperial mausoleum garden raised new topics for the field investigation, drilling and excavation of Han mausoleums, and opened up new horizons for the study of the imperial mausoleum system. The distribution of these secondary burial pits and the placement of burial objects in the pits are undoubtedly related to the palace system at that time. Therefore, the excavation and research of these secondary burial pits are of great value to the study of the palace system, emperor's life, and burial customs of the Han Dynasty. .