The most common writing strategy of the seven-words-eight-sentences poetry before Du Fu, as in its initial stage, was in favor of narration or scenery description with the middle four sentences of the poetry. The shortcoming of such form lies in external description and exterior antithesis at the cost of the existence of poet's subjective self. Obiviously this shortcoming was amended with Du Fu's new strategy of writing. During Du Fu's lifetime, many of his seven-words-eight-sentences poems were written with strategies of former writers. However, not for long he established of his own a stable style for seven-words-eight-sentences poetry. The feature of the new style consists in the subjective engagement of the poet himself. In the whole poetry, the poet directs the procession of the contention with the movement of his body. During his writing, the poet proposes a range with the title of the poem first, then he enters his poem with a series of action which corresponds to the natural rhythm of body movements. Each of the movements follows the determined procedure until the poem is completed. I call "formalization" the concept of writing seven-words-eight-sentences poetry with established procedure, and "Du Fu's new style of seven-words-eight-sentences poetry" the ensueing writing strategy and style.