Professor Wang Shi-jei is the leader of Three-One Linguistics, whose theory had generally applied to the areas of linguistics and rhetoric. He posed a system that ”zero and divergence”, ”the latent and the evident” as well as ”four worlds” could be integrated into one. Professor Wang detailed the transformation between the positive and the negative divergences that involved a spiral structure. This article tries to applied Professor Wang's theory to writing instruction. Accordingly, teachers will have a theoretical basis to instruct and review student's compositions.