Shen Boru's application for time writing originated from his application for time teaching method. From low to high, it covers all the stages of writing learning and improvement from the first and second grades to the fifth and sixth grades of primary school. Moreover, there are two stages of "actual combat writing" in Xiaoshengchu. Composition teaching turns complexity into simplicity, returns to essence, enables children to master basic writing tools, gradually advances from the starting point, accumulates achievements and releases writing ability. It's good for children.