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http://www.cnn.com/studentnews/Check out the student news on 12/4/14. It features a story on China banning "puns". This is a great resource and student friendly for bringing information into your classroom.
For a more cynical (and perhaps not school appropriate) view, here's The Daily Show's take:
http://thedailyshow.cc.com/videos/g4fquh/a-measured-discussion-of-the-prohibition-of-wordplay-in-the-people-s-republic-of-china