Writing a letter to a friend or relative is the perfect way to show them how much you love them. CFP
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October 9 is World Post Day. Once upon a time, if a friend or family member had to move away, you might not have seen that person for years, or maybe ever again. That was before email, before the smartphone, before, indeed, there was any kind of phone at all. The only way to stay in touch was to do something that now seems rather quaint (少见的): you had to write a letter.