I want to ask how to divide the size of Spring Festival couplets.

Division: Generally speaking, the last word of the couplet is ambiguous, which is the upper part, and the flat part is the lower part. Flat tones can be divided into ancient sounds, and it can be roughly considered that one or two sounds in modern pronunciation are flat tones and three or four sounds are flat tones. Not really. For example, "Fu" which often appears in Spring Festival couplets is a derogatory term. Sticking method: facing the gate, stick the upper couplet on the right and the lower couplet on the left.