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To close the Baidu hi tone in the Internet search to find some of the information is also talking about the "Settings", but to find a large circle "Settings" not found, presumably because I Baidu hi upgrade it, and finally changed the method:
step 1: find location system preferences
second step: find the "notice"
third step: find the "Baidu hi", do not choose to "play a sound notification" on it.
