Korean Pungsu · 풍수지리 (geomancy)
Pungsu Calculator (풍수지리 · Korean geomancy)
The Korean reading of a site — not the eight-direction shortcut. Your 좌향 (sitting-facing axis) is placed on the 나경 (geomancer's compass)'s 24-mountain ring, weighed against your 본명궁 (natal trigram) with the 팔택 (Eight Mansions) stars, then checked against the 삼살방 (Three Killings), 대장군방 (Great General) and 손 없는 날 (spirit-free days) for the date you plan to break ground.