<?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_87844</uri> <spellings>    <spelling>      <written-form script="traditional Chinese">高陽郡</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <written-form script="simplified Chinese">高阳郡</written-form>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>    <spelling>      <transcription system="Pinyin">Gaoyang Jun</transcription>      <exonym-lang></exonym-lang>      <attested-by></attested-by>      <note></note>    </spelling>  </spellings>  <feature-type>    <name>郡</name>    <alternate-name>郡</alternate-name>    <transcription>jun</transcription>    <translation lang="en">commandery</translation>  </feature-type>  <temporal>    <begin>613</begin>    <begin-rule>4</begin-rule>    <end>616</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>38.52006</degrees-latitude>    <longitude-direction>E</longitude-direction>    <degrees-longitude>114.97504</degrees-longitude>    <geo-source>FROM_AC</geo-source>    <present-location><br />
<b>Warning</b>:  Undefined array key "text_value" in <b>/var/www/html/tgaz/placename.php</b> on line <b>547</b><br />
     </present-location>  </spatial>  <historical-context>    <part-of-relationships>      <part-of parent-id="hvd_113617" from="613" to="616" >        <parent-name>隋</parent-name>        <transcribed-name>Sui</transcribed-name>      </part-of>    </part-of-relationships>    <subordinate-units><br />
<b>Warning</b>:  Undefined array key "child_sys_id" in <b>/var/www/html/tgaz/placename.php</b> on line <b>566</b><br />
<br />
<b>Warning</b>:  Undefined array key "begin_year" in <b>/var/www/html/tgaz/placename.php</b> on line <b>566</b><br />
<br />
<b>Warning</b>:  Undefined array key "end_year" in <b>/var/www/html/tgaz/placename.php</b> on line <b>566</b><br />
      <subordinate-unit sys-id="" from="" to="" ><br />
<b>Warning</b>:  Undefined array key "child_vn" in <b>/var/www/html/tgaz/placename.php</b> on line <b>567</b><br />
        <name></name><br />
<b>Warning</b>:  Undefined array key "child_tr" in <b>/var/www/html/tgaz/placename.php</b> on line <b>568</b><br />
        <transcribed-name></transcribed-name>      </subordinate-unit>    </subordinate-units>  </historical-context>  <data-source>CHGIS</data-source>  <source-note>    <![CDATA[      高阳郡（613-616）
隋大业九年（613年）以博陵郡改名。⑴治鲜虞县（今河北定州市）。原恒山郡所辖各县并入，⑵辖境扩大。义宁元年（617年）析置恒山郡，⑶辖境缩小。

⑴唐?魏徵：《隋书》卷4《炀帝本纪下》：大业九年十月乙酉“可改博陵为高阳郡。”（北京，中华书局，1973年汪绍楹等校点本，1册，85页）
⑵《元和郡县志》卷17《河北道二》，中华书局，第477页。
《新唐书》卷39《地理三》，北京，中华书局，第1014页。
⑶《新唐书》卷39《地理三》，北京，中华书局，第1014页。
《旧唐书》卷39《地理二》，北京，中华书局，1975年，第5册，第1502页。    ]]>  </source-note>  <source-uri>      </source-uri></placename>