《汉书·志·天文志》
心宿是天帝的明堂，大星是天帝，前后星是天王的儿子之属，不希望排列直，直则天帝失筹算。
心为明堂，大星天王，前后星子属。不欲直，直，王失计。
Xinxiu is the Tiandi's Mingtang, and the big star is the Tiandi; the stars in the front and the back are the sons of the Tianwang, who do not wish to be ranked straightly, or the Tiandi will miscalculate.