To whom it may concerns
Due to the fact that there's been family issues and 你的名字 need to come back to China from 24th of May to 31st of May in order to join us for this special event. We are expecting him/her to be with us during this period, thanks for your understanding.
Kind regards
监护人姓名
Guardian/mother/father
这样可以吗?内容和理由你可以自己再改改。
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