Yuefu is attached to these three categories. "Ancient poetry" is ancient poetry, which is also called ancient style. It is written according to the practice of ancient poetry, and its form is relatively free, and it is not bound by metrical rules. Judging from the number of words in poems, there are so-called four-character poems, five-character poems and seven-character poems. "Rhyme" is a kind of China's modern poetry, and its metrical requirements are very strict. There are three common types: five laws, seven laws and exclusive laws. Jueju originated in the Han Dynasty, took shape in the Wei, Jin, Southern and Northern Dynasties, and flourished in the Tang Dynasty. At that time, there were all four sentences, which were called "couplet". The so-called "rhyme of couplet * * * in Wen Xin Diao Long Ming Shi" made Bai Liang redundant. The Tang and Song Dynasties were the golden age of Chinese classical poetry, and quatrains were popular all over the world, and the creation was prosperous. Famous chapters and beautiful sentences were like beautiful flowers, which was unprecedented. The thoughts and feelings are also different, singing about the rivers and mountains of the motherland, expressing one's own heart, describing practical and political travel notes and scenic spots. Let's walk into the ocean of China's ancient poems. You can choose excerpts, as the opening remarks, add a little bit of your own language, and introduce some famous poets, etc., and your improvisation is often better than your prepared manuscript. I wish you success.