Horizontal approval: the second five-year blessing
How to correctly distinguish the upper part from the lower part;
(1) level tone, the last word in the upper part should be level tone, ending with three or four tones, and the last word in the lower part is level tone, with one or two tones.
(2) the law of causality, because the upper part, the fruit is the lower part. (3) chronological order, the first time is the upper part, and the last time is the lower part.
(4) the size of the spatial range, the small is the upper part, and the big is the lower part.