1, the common couplets generally to the right for the first line, to the left for the second line, if the cross-check is different from the common couplets, then the cross-check is the main cross-check, the cross-check from which side of the beginning of the reading, which side that is the first line, but also the first line will be posted in the side of the reading. So how to distinguish between the upper and lower couplets, please look down.

2, flat and oblique method: that is, according to the last reading of the couplet to distinguish between the upper and lower couplets, if the last word of the couplet is the third or fourth tone in Mandarin (we call it oblique tone), then this is the couplet in the upper couplet, if the last word of the reading of the first or second tone (we call it a flat tone), then this is the couplet in the lower couplet.

3, the meaning of points: some couplets in order to pursue the moral will give up the oblique pronunciation, if the seller did not clearly tell you which one is the first line, you can distinguish the meaning of the couplet, generally speaking, the upper and lower couplets will have a certain cause and effect logical relationship, which can be the cause of as the first line, the fruit of as the second line.