How to understand suffixes and suffixes in poetry

The first couplet: the first sentence and the second sentence

Transfer: the third and fourth sentences

Neck chain: sentence 56

End couplet: the seventh and eighth sentences.

First couplet, parallel couplet, neck couplet and tail couplet usually refer to rhyme.

for instance

Yellow Crane Tower? [Cui Hao]

The fairy of the past has flown away by the yellow crane, leaving only an empty Yellow Crane Tower. -the first couplet

The yellow crane never revisited earth, there have been no long white clouds for thousands of years. -Couplets

Every tree in Hanyang has become clear due to sunlight, and Nautilus Island is covered with sweet grass. -Neck chain

But I looked at my hometown, and the twilight was getting thicker, and the mist of sadness was filled on the river waves. -Tail joint