Do couplets on auspicious days stick to the left or right?

Auspicious days are rhymes and rhymes are couplets. When posting couplets, it is usually posted on the right and on the left. Because we used to write from right to left in ancient times, couplets should also be written from right to left.

Generally, it depends on the last word of the couplet. If the word is ambiguous, it is the upper part; If it is flat, it is the bottom line. In modern Chinese, one or two tones are flat and three or four tones are oblique.