《明史·志·卷十一》
如在转中以下，迟疾与经朔相同，在转中以上，减去转中就是疾交迟和迟交疾。
在转中已下，其迟疾与经朔同，已上减去转中疾交迟，迟交疾。
As under the transfer, the fast and slow are the same as the ephemeris. When above the transfer, subtract the transfer and we get the fast conjunction slow and slow conjunction fast.