Read the tradition before reducing it to an answer.先读传统，再谈答案。

Five starting points for understanding how later practitioners discussed change, correspondence, landform and qi. Dates and attributions are treated cautiously where the record is uncertain.从五部重要文本出发，理解后世如何讨论变化、对应、形势与气；凡年代与作者存疑之处，均谨慎说明。