Analysis: this rhyme indicates the ending "open" and "come", which are all light sounds and cannot be judged. Judging from the causal relationship, "Year of the Tiger" is the cause of couplets and the first couplet. "If you like, you will always come" is the fruit of the couplet, which is the second couplet.
The method of judging couplets;
1, level tone, the last word in the upper part should be level tone, ending with three tones and four tones, and the last word in the lower part is level tone, with one tone and two tones.
2, causality, because the upper part, the fruit is the lower part.
3. In 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, the big is the lower part.