Yī Bái

One White (一白, yī bái) is the first of the nine stars and has its home in 坎, the palace of the north and of water. 星厯考原 quotes the Yellow Emperor's Dunjia Classic to say that the three long spans of the calendar, the 三元, rise from the nine palaces, and it names each star by a gate and a color. For One White the gate is 休, the Rest gate.

星厯考原 卷五 matches it with 貪狼, the Greedy Wolf. The Ming house book 陽宅十書 uses that same name for a different job, as the star of the 生氣 position, so a reader meets one name in two schemes. The nine-star square is a chart of numbers on palaces, while the Eight Mansions list names positions from a person's own palace.

In the worked chart of 星厯考原, the year 甲子 of 康熙二十三年 (1684) begins the 180-year cycle with One White in the center and the other stars placed around it in the order 乾, 兌, 艮, 離, 坎, 坤, 震, 巽. 協紀辨方書 puts One White in the 紫白 set of favorable stars, with 六白, 八白 and 九紫.