As we all know, poetry emphasizes rhyme. In poetry, words that rhyme are called rhymes. On the contrary, words that do not rhyme are called white feet. When writing metrical poems, because metrical poems are divided into quatrains and rhymed poems, they pay attention to level and oblique rhymes, and the rhymes and rhymes are all flat-tone characters, so all the oblique-tone characters are called white feet. In medieval Chinese, it included the four tones of "ping", "shang", "lai" and "ru". In modern Chinese, the "ru" tone no longer exists and has been merged into the tones of "ping" and "yangping" in oblique tones. In other words, the tones in oblique tones are It contains the character "Ru Ting", so the character "Ru Ting" can be used as a white foot.
First of all, there is the specific definition of white feet in metrical poetry. As mentioned before, the rhyme that is emphasized in metrical poetry is that the rhyme is flat and the white foot is oblique. Therefore, based on the way a poem starts and ends, you can accurately know which word in that sentence is white foot. For example, if a rhyme is absolutely in the form of flat and flat, then the last words of the first and third sentences are the footnotes of the poem, and assuming that the rhyme is absolutely flat and flat. Format, then, the white foot of this poem has only one word, which is the last word of the third line of the poem.
Secondly, there are two situations in which the characters that enter the tone in the metrical poem are white-footed. The first one is that in the creation of Pingshui Yun, there is no problem at all with the white feet of the characters entering the tone. Because in Pingshui rhyme, the rhyme part has divided the entering tone into oblique tones, the rhymes of the metrical poems are all flat tones, and the white feet are all oblique tones. As ancient Chinese evolved into modern Chinese, the entering tones disappeared and In the oblique tone, the character "ru" naturally becomes a part of the oblique tone characters, so it is normal for it to be used as a prefix. The second type is that in the creation of new rhyme, because the pronunciation of the Ru-tone character has changed, you need to further pay attention to whether it has been classified into the Ping tone. If it has been classified into the Ping tone, it will naturally not be used.
It can be seen from this that whether the character Ru Teng can be used as a rhyme depends on the situation. In the creation of Pingshui Yun, it is completely okay to use the character Ru Ting as a rhyme, but in Xin Yun In the creation, more distinctions need to be made.