How to distinguish the upper and lower couplets of Spring Festival couplets?

Spring Festival couplets, if the upper and lower couplets are distinguished by suffixes, are as follows:

First, the ups and downs have the same ending, such as the Spring Festival couplets, "Everything goes well, and everything goes well every year." Only by grasping the context can we distinguish the upper and lower couplets.

Second, mutually assured destruction, such as the Spring Festival couplets, "Ma Ye is on the shore, what is the green palm?" Lotus pond, who punches the red fist ",know the word order to distinguish the upper and lower couplets.

Third, at the end of the Spring Festival couplets, "Sister, I think, brother, you are wrong." Only by understanding the logical relationship of couplets can we distinguish the upper and lower couplets.

Fourth, the Spring Festival couplets "The motherland is magnificent and the scenery in China is new" are the ending couplets with the upper part flat and the lower part flat, but this kind of couplets can not be distinguished by flat.

Sticking Spring Festival couplets to find the relationship between Spring Festival couplets and banners (horizontal approval).