vim replace character to \n

I need replace all ; 开发者_如何转开发to \n , but :%s/;/\n/gc not works

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See http://vim.wikia.com/wiki/Search_and_replace

When searching: \n is newline, \r is CR (carriage return = Ctrl-M = ^M)
When replacing: \r is newline, \n is a null byte (0x00).

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You need to use \r as the replacement instead: :%s/;/\r/gc