如果你的答案或建议被采用，也许会获得这位神秘小伙伴从榆林带回的惊喜小礼物哦！
If your answer or advice get adopted, you will have the chance to get a little surprise from this secret guest when he travels back from Yulin!
昨天已成历史，明天还是神秘之事，今天是上帝的小礼物，这是…
Yesterday is history, tomorrow is a mystery, today is God's gift, that's why we call it the present.
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