This paper is about the sound iconicity of the Late Middle Chinese entering tone in two of Du Fu's long narrative poems, "The Journey to the North" and "Singing my Heart out in Five Hundred Characters on the Way from the Capital to Fongxian County", as well as Du Fu's grammar of poetry in these two poems. In poetry, rhyme is an arbitrary and 'visible' figure reiterated with regulation which forms an axis of sequence, and this axis will work jointly with all the other poetic elements—semantics, images, and grammar to form the whole of a poem. In these two poems, all the rhyme characters carry a voiceless —t ending, which is classified with —k and —p endings as the entering tone in Late Middle Chinese reconstructed by Edwin Pulleyblank. These...