《晋书·志·第一章》
东井宿钺星前面的四颗星叫司怪，主管候察天地日月星辰的变化和鸟兽草木的反常情况，明主听说有灾祸，就要修德养性、保障福瑞。
东井钺前四星曰司怪，主候天地日月星辰变异及鸟兽草木之妖，明主闻灾，修德保福也。
The four stars in front of Dongjing Su Yuexing are called Siguai, which are in charge of monitoring the changes of heaven and earth, the sun, the moon, the stars, and the abnormalities of birds, beasts, plants and trees. When a wise ruler hears that there is a disaster, he will cultivate his morality, protect his happiness and well-being.