Classical Chinese poetry forms developing a complete poetic concept; this is, indeed, especially the case with the five-character line version. Also known as the Five-character-quatrain, this form of regulated verse is characterized by four lines of five characters each. Also known as the Seven-character-quatrain, this is a form of regulated verse with four lines of seven characters each. While embracing all, or most of, the "lushi" rules and regulations the "pailu" allows for a number of linked couplets with no maximum upward limit. A strict emphasis on formal parallelism is typical of the "pailu" form. Poems based on traditional structures, originally meant as lyrics
Regulated verse are rhymed on the even lines, with one rhyme being used throughout the poem. Also, and definitionally, the tonal profile of the poem is controlled (that is, "regulated"). Furthermore, semantic and tonal parallelism is generally required of certain interior couplets. During the Tang Dynasty, the "Shen-Song" team of Shen Quanqi and Song Zhiwen greatly contributed to the development of this Classical Chinese verse form. Regulated verse consisting of the three "jintishi" or "new style poetry" forms of "lushi", "jueju", and "pailu" while retaining the basic characteristics that are distinguished from the "gushi" or "old style poetry" by the addition of