What is the tradition of the site selection of early tombs in Koguryo?

In the early Koguryo period, the tomb was at the highest point of the foothills or steep cliffs, and then gradually moved to Gaofu on the flat ground. The form of high burial ground gradually combines its inherent national tradition with the sense of kingship and geomantic omen in the Central Plains. In the early Koguryo period, there was a strong tradition of collecting tombs for burial.