Can Du Fu's madness be explained by a few rhyming words? ..

In Du Fu's poem Madman, the rhyme is yuan rhyme, and the rhyme is "heaven, year, thousand, boat, jump and hour". This is because in ancient Chinese, Yuan Yun belongs to Pingsheng, but in modern Chinese, some of it belongs to Nuo. Therefore, except for a few words, such as "Tian, Nian, Qian, Chuan, Dian, Shi", all of them belong to non-rhyming words.

In modern Chinese, words with meta-rhyme are common, such as "Yuan, Han, Kan, Lan, Gan, Slow, Mountain, Leisure, Drama, Fantasy, Life, etc." But in Mad Men, only the words "day, year, money, ship, code and time" are used as pledges.

Generally speaking, the rhyme requirements of the poem Madman are strict, and all the words can't be used as rhyme except a few specific words. This also reflects Du Fu's high degree of self-discipline and strict requirements for poetry creation.