The bottom line is: loong will take off in a thousand years.
Judgment standard:
How to judge the couplets? Besides distinguishing from the content of couplets, it is more important to judge from the flat sound at the end of couplets. It is strictly stipulated in couplets that the last word of the first couplet should be flat and the last word of the second couplet should be flat. Later generations called this rule "flat rise and flat fall".
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On the basis of four tones, the flat tone is summarized through incomplete induction. Flat refers to straight, flat refers to twists and turns.
Among the four tones of Putonghua, the first and second tones are flat tones; The third and fourth sounds are ligatures.
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