The twenty-eight lodges (xiu 宿). Named and numbered in the central circle, the twenty-eight lodges, represent uneven orange-segment-like divisions of the celestial sphere running from pole to pole through the ‘guide stars’ (juxing 距星) at/near the western extremity of the constellations after which they are named. In the inner circle are the modern identifications of those guide stars. In the outer circle are the equatorial lodge widths in contemporary use in du 度 / days, where the number of du to a ‘circuit of heaven’ (zhoutian 周天) equals the number of days in a solar year (≈ 365¼). Around the lodge-circle are arrayed lines marking the twenty-four qi 氣 of the tropical year. The precession-adjusted position of the winter solstice – Dipper._L08 11 du – is that proposed by Zu Chongzhi’s 祖沖之 (429–500) Daming li 大明曆, which was adopted by the Liang 梁 court in 510 and represents an adequate median value for the ‘Five Dynasties’ period (502–618).