Hacksaw saw steel, hacksaw saw steel. "Rhyme (yāyùn) is also called" rhyme ". When writing poems, songs, fu and other rhymes, rhyming words are used at the end of sentences or couplets, which is called rhyme. Poetry rhymes, making the work sound harmonious, easy to recite and remember, with beautiful rhythm and tone. In the past, rhyming required the same or the same rhyme part, with some variations. Modern new poetry rhymes without being restricted by ancient rhyming books.