Poetry have challenged the traditional definitions of the sonnet form, rendering entire sequences of "sonnets" that often lack rhyme, a clear logical progression, or even a consistent count of fourteen lines. "Shi" () Is the main type of Classical Chinese poetry. Within this form of poetry the most important variations are "folk song" styled verse ("yuefu"), "old style" verse ("gushi"), "modern style" verse ("jintishi"). In all cases, rhyming is obligatory. The Yuefu is a folk ballad or a poem written in the folk ballad style, and the number of lines and the length of the lines could be irregular. For the
Sonnet 99 appears as one syllable (in lines 7, 10, and 15). Line 13's "eate" equals modern past tense "ate". As to its fifteen lines, sonnet structure has never been absolutely fixed, and Sidney Lee adduces many examples of fifteen line sonnets. An extra line is particularly common in linked sonnets, and this sonnet is linked to 98; Malone ended 98 with a colon to demonstrate the connection. However, other scholars have remarked on the clumsiness of the first line and suggested that the quarto text represents an unrevised draft that found its way into print. Edward Massey and others asserted that