《宋史·志·卷二》
《干象新书》：在九卿南面，它的占法与紫微垣三公相同。
《乾象新书》：在九卿南，其占与紫微垣三公同。
"Gàn Xiàng Xīn Shū": Located to the south of the nine ministers, its divination methods are the same as the three dukes of the Zǐ Wēi Enclosure.