How to master the law of leveling in poetry?

Seven-character quatrains are short for seven quatrains. Its levelness has four situations, just like the five musts:

1, the four-line poem (the first sentence rhymes):

⊙ШШ Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш

⊙⊙⊙仄仄仄仄仄仄仄仄仄仄仄仄仄仄仄.

⊙⊙⊙䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼𰴜𰴜𰴜𰴜 19999

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙⊙⊙⊙⊙⊙8

It can be seen from this flat tone that the first sentence is preceded by two flat tones, the second sentence and the third sentence are preceded by two flat tones, and the fourth sentence is preceded by two flat tones. It means that as long as you know the level of "five lines parallel", you will know the level of "seven lines parallel". As for whether the front is flat or squeaky, it is also easy, that is, when it is flat and squeaky, the back will not change.

2. The poem begins with the four verses (the first sentence rhymes):

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙⊙⊙⊙⊙⊙8

⊙⊙⊙仄仄仄仄仄仄仄仄仄仄仄仄仄仄仄.

⊙⊙⊙⊙≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤≤𕫤≤̤̤̤̤̤

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙⊙⊙⊙⊙⊙8

It can be seen from this flat tone that the first sentence is preceded by two flat tones, the second sentence and the third sentence are preceded by two flat tones, and the fourth sentence is preceded by two flat tones. It means that as long as you know the level of five-line juxtaposition (the first sentence rhymes), you will know the level of seven-line juxtaposition (the first sentence rhymes). As for whether the front is flat or squeaky, it is also easy, that is, when it is flat and squeaky, the back will not change.

3. Equality in the Four Trucks (the first sentence rhymes) Example poem:

⊙⊙⊙⊙䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼䷼𰴜𰴜 1

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙⊙⊙⊙⊙⊙8

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙𕬙⊙⊙⊙⊙

⊙⊙仄仄仄仄仄仄仄仄仄仄仄仄仄仄仄.

It can be seen from this flat tone that the first sentence is preceded by two flat tones, the second and third sentences are preceded by two flat tones, and the fourth sentence is preceded by two flat tones. It means that as long as you know the level of "five lines parallel", you will know the level of "seven lines parallel". As for whether the front is flat or squeaky, it is also easy, that is, when it is flat and squeaky, the back will not change.

4, seven absolute equality (the first sentence rhymes) Example poems:

⊙⊙⊙仄仄仄仄仄仄仄仄仄仄仄仄仄仄仄.

⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙𕬙⊙⊙⊙⊙⊙8

⊙Ш⊙ШШ Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш Ш

⊙⊙⊙仄仄仄仄仄仄仄仄仄仄仄仄仄仄仄.

It can be seen from this flat tone that the first sentence is preceded by two flat tones, the second and third sentences are two flat tones, and the fourth sentence is two flat tones. It means that as long as you know the level of "juxtaposition of five elements", you will know the level of seven rhymes (alliteration). As for whether the front is flat or squeaky, it is also easy, that is, when it is flat and squeaky, the back will not change.