<?xml version="1.0" encoding="UTF-8"?><placename>  <system>China Historical GIS, Harvard University and Fudan University</system>  <license>CC BY-NC 4.0</license>  <uri>https://chgis.hudci.org/tgaz/placename/hvd_70188</uri> <spellings>    <spelling>      <written-form script="traditional Chinese">亭川縣</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <written-form script="simplified Chinese">亭川县</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <transcription system="Pinyin">Tingchuan Xian</transcription>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>  </spellings>  <feature-type>    <name>县</name>    <alternate-name>縣</alternate-name>    <transcription>xian</transcription>    <translation lang="en">county</translation>  </feature-type>  <temporal>    <begin>686</begin>    <begin-rule>4</begin-rule>    <end>704</end>    <end-rule>4</end-rule>  </temporal>  <spatial>    <object-type>POINT</object-type>    <xy-type>point</xy-type>    <latitude-direction>N</latitude-direction>    <degrees-latitude>35.21884</degrees-latitude>    <longitude-direction>E</longitude-direction>    <degrees-longitude>106.65195</degrees-longitude>    <geo-source>FROM_AC</geo-source>    <present-location><br />
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     </present-location>  </spatial>  <historical-context>    <part-of-relationships>      <part-of parent-id="hvd_111044" from="686" to="704" >        <parent-name>陇州</parent-name>        <transcribed-name>Long Zhou</transcribed-name>      </part-of>    </part-of-relationships>    <subordinate-units><br />
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      <subordinate-unit sys-id="" from="" to="" ><br />
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        <transcribed-name></transcribed-name>      </subordinate-unit>    </subordinate-units>  </historical-context>  <data-source>CHGIS</data-source>  <source-note>    <![CDATA[      亭川县（686—704） 
唐垂拱二年（686 年）改华亭县为亭川县，属陇州①。神龙元年（705 年），复为华亭县②。治所在今甘肃华亭县。
①《读史方舆纪要》卷58《陕西7》平凉府华亭县条：“汉右扶风汧县地。后魏普泰二年立华亭镇，以扼蕃戎。隋大业初置县，属安定郡。义宁二年，分置陇州于此。唐改属陇州。垂拱二年，改为亭川县。神龙初复故，大历八年置义宁军于此。九年，吐蕃入寇，凤翔节度李抱玉破之于义宁是也。元和三年省县入汧源。贞元三年，吐蕃大掠汧阳、吴山、华亭，即故城也。五代唐又改置义州。后周显德中，复置华亭县为州治。宋改为仪州。熙宁五年州废，以县属渭州。金属平凉府。”中华书局2005 年版，第2783 页。
②《旧唐书》卷38《地理一》陇州条：“华亭，隋县。垂拱二年，改亭川。神龙元年，复旧。”中华书局1975 年版，第1406 页。    ]]>  </source-note>  <source-uri>      </source-uri></placename>