写诗讲求押韵,这是古今共守的原则。但是“时有更革,音有转移”,语音在时间的长河中会出现新的分化,也会出现新的融合,古代同音的,后来可能不同音;古代不同音的,后来可能同音。因而古诗的韵脚字也会出现古代押韵,后人读来不押韵的情况。为了便于吟哦讽诵,上口顺耳,便有人临时改 Writing poetry emphasizes rhyming, which is the principle of keeping both ancient and modern times. However, “there are times when there is more change and there is a shift in tone.” There will be new differentiation of voices in the long river of time, new convergence will also emerge, ancient homonyms may later be different in tone, and ancient ones may then be homophones. Therefore, ancient rhyme rhyme script will appear ancient rhyming, future generations do not read rhyme situation. In order to facilitate Yin Yin recite, catchy, someone temporary change