不过按照当地的习俗，听完吉利话就要给红包。

But according to local customs, after hearing these propitious words, the audience has to give them tips.

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可是到了1947年，每逢考试前夕，学生都用红纸包了钞票，上面写些应景的吉利话，给老师送去。

By 1947, however, students before every exam were bringing money wrapped up in red paper on which were inscribed suitable characters wishing the teacher success.

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