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      <base href="https://bugs.documentfoundation.org/">
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    <body><span class="vcard"><a class="email" href="mailto:ming.v.hua@qq.com" title="Ming Hua <ming.v.hua@qq.com>"> <span class="fn">Ming Hua</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - "Missing hyphenation info" pop-up banner displayed for Chinese which has no concept of hyphenation"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=132396">bug 132396</a>
          <br>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">CC</td>
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           </td>
           <td>ming.v.hua@qq.com
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            <b><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - "Missing hyphenation info" pop-up banner displayed for Chinese which has no concept of hyphenation"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=132396#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - "Missing hyphenation info" pop-up banner displayed for Chinese which has no concept of hyphenation"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=132396">bug 132396</a>
              from <span class="vcard"><a class="email" href="mailto:ming.v.hua@qq.com" title="Ming Hua <ming.v.hua@qq.com>"> <span class="fn">Ming Hua</span></a>
</span></b>
        <pre>As a native Chinese speaker, I use Chinese characters in Writer all the time,
and have never encountered such error message.

LibreOffice only supports zh_CN and zh_TW locales though, and NOT simply "zh". 
This may be the source of your problem.  Also I doubt your system is as you
specified in this bug report (IA32 CPU and macOS, really?), so please paste
your LibreOffice information from the Help > About LibreOffice dialog, like
this:

Version: 6.3.5.2 (x64)
Build ID: dd0751754f11728f69b42ee2af66670068624673
CPU threads: 2; OS: Windows 10.0; UI render: default; VCL: win; 
Locale: zh-CN (zh_CN); UI-Language: en-US
Calc: threaded</pre>
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