There are Yin Ping and Yang Ping in the poem, but there is no sound. Can you explain it in detail

Generally, the ancients classified the words with yin and yang tones as "flat tones" and the words with up and down tones as "flat tones", which is the so-called "flat tones". Ancient poetry has requirements for Pingqi's poems, because the ancients came to "sing" poems.

I heard the expression "combination method" for the first time. I guess you may mean "combination sentence". The ancients sometimes liked to combine other people's ready-made poems when writing poems. The basic requirements of this combination are that the number of words, fluency and rhyme must meet the same requirements.

For example, in the fiftieth chapter of A Dream of Red Mansions, "Xue Lu Temple asks for couplets, and impromptu poems are warm and fragrant, making elegant spring riddles".