Chinese placeholder

 

=> Ordinary English half-width space
  =>   =>   => no-break space (Ordinary English half-width space but no line break)
  => Chinese full-width space (One Chinese width)
  =>   => en space (half Chinese width)
  =>   => em space (one Chinese width)
  => one quarter em space (one-quarter Chinese width)

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Origin blog.csdn.net/weixin_40013817/article/details/113430994