<?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_70041</uri> <spellings>    <spelling>      <written-form script="traditional Chinese">當亭縣</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <written-form script="simplified Chinese">当亭县</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <transcription system="Pinyin">Dangting 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>447</begin>    <begin-rule>4</begin-rule>    <end>557</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>34.73837</degrees-latitude>    <longitude-direction>E</longitude-direction>    <degrees-longitude>105.38878</degrees-longitude>    <geo-source>FROM_FD</geo-source>    <present-location>    </present-location>  </spatial>  <historical-context>    <part-of-relationships>      <part-of parent-id="hvd_115874" from="447" to="557" >        <parent-name>天水郡</parent-name>        <transcribed-name>Tianshui Jun</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[      当亭县（447—557）
北魏太平真君八年（447 年），以故冀县地置当亭县，属天水郡①。北周孝闵帝元年（557 年）
改为冀城县②。治所在今甘肃甘谷县东③。

①《魏书》卷106 下《地形志下》天水郡条：“当亭，真君八年置”，中华书局1974 年版，第2610 页。《读书方舆纪要》卷59《陕西八》巩昌府冀城条：“后魏太平真君八年以故冀县地改置当亭县，后周废”， 中华书局2005 年版，第2820 页。
②《隋书》卷29《地理上》天水郡：“冀城，后周曰冀城县，废入黄瓜县。大业初改曰冀城”，中华书局1973 年版，第813 页。
③《读书方舆纪要》卷59《陕西八》巩昌府冀城条：“在今县（指伏羌县）东。汉县治此”， 中华书局2005 年版，第2820 页。牛平汉：《清代政区沿革综表》，中国地图出版社1990 年版，第466 页。民国18 年，伏羌改名甘谷。    ]]>  </source-note>  <source-uri>      </source-uri></placename>