An Inquiry into the 28 Lodges (xiu) in Daybooks (Ri Shu) on Bamboo Slips of the Chu and Qin States

The new historical materials concerning the 28 lodges found in Daybooks(Ri Shu) written on bamboo slips of the Chu and Qin states play an important role in investigations into the evolution of these lodges in China from the Warring States Period to the Qin dynasty.This paper lays stress on the material in these sources relating to the so-called 'old' angular widths of the 28 lodges,dusk and dawn culminating stars,the stellar lodges in which the sun was located,the inequality of the divisions of the sky linked to the four emblematic animals,the number of the 28 lodges and stellar divination based on the 28 lodges.