The difference between Four Jue and Qi Jue: Four Jue means that the ancients used four lines of poetry with four lines and one Jue to complete an ideological concept. Qijue is a metrical poem with four lines in each line and seven words in each line. Quatrains, also known as quatrains, broken sentences, and quatrains, are four sentences each, short and concise. It is a Han poetry genre that became popular in the Tang Dynasty and is a form of modern poetry. The difference between the Four Jue and the Seven Jue. The Four Jue means that the ancients used four lines of poetry with four lines and one Jue to complete an ideological concept. Qijue is a metrical poem with four lines in each line and seven words in each line.