<a href="https://en.wikipedia.org/wiki/Mongol_conquest_of_the_Jin_dynasty" id="mwLw" rel="mw:WikiLink" title="Mongol conquest of the Jin dynasty">Mongol–Jin war</a>: The <a href="https://en.wikipedia.org/wiki/Mongol_Empire" id="mwMA" rel="mw:WikiLink" title="Mongol Empire">Mongols</a> entered <a href="https://en.wikipedia.org/wiki/Kaifeng" id="mwMQ" rel="mw:WikiLink" title="Kaifeng">Kaifeng</a> after a <a href="https://en.wikipedia.org/wiki/Mongol_siege_of_Kaifeng" id="mwMg" rel="mw:WikiLink" title="Mongol siege of Kaifeng">successful siege</a> and began looting in the fallen capital of the <a href="https://en.wikipedia.org/wiki/Jin_dynasty_(1115–1234)" id="mwMw" rel="mw:WikiLink" title="Jin dynasty (1115–1234)">Jin dynasty</a>.<sup about="#mwt15" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-1"}}' id="cite_ref-1" rel="dc:references" typeof="mw:Extension/ref"><a href="./May_29#cite_note-1" id="mwNA" style="counter-reset: mw-Ref 1;"><span class="mw-reflink-text" id="mwNQ">[1]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-1"><cite about="#mwt12" class="citation book cs1" id="CITEREFTwitchettFrankeFairbank1978">Twitchett, Denis C.; Franke, Herbert; Fairbank, John King (1978). <a class="external text" href="https://books.google.com/books?id=iN9Tdfdap5MC&amp;q=arrived+26+February+1233+29+May++city+gates+were+opened" id="mwB_8" rel="mw:ExtLink nofollow"><i id="mwCAA">The Cambridge History of China: Volume 6, Alien Regimes and Border States, 907-1368</i></a>. Cambridge University Press. p.<span id="mwCAE" typeof="mw:Entity"> </span>264. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCAI" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCAM" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-521-24331-5" id="mwCAQ" rel="mw:WikiLink" title="Special:BookSources/978-0-521-24331-5"><bdi id="mwCAU">978-0-521-24331-5</bdi></a><span class="reference-accessdate" id="mwCAY">. Retrieved <span class="nowrap" id="mwCAc">28 February</span> 2021</span>.</cite><span about="#mwt12" class="Z3988" id="mwCAg" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Cambridge+History+of+China%3A+Volume+6%2C+Alien+Regimes+and+Border+States%2C+907-1368&amp;rft.pages=264&amp;rft.pub=Cambridge+University+Press&amp;rft.date=1978&amp;rft.isbn=978-0-521-24331-5&amp;rft.aulast=Twitchett&amp;rft.aufirst=Denis+C.&amp;rft.au=Franke%2C+Herbert&amp;rft.au=Fairbank%2C+John+King&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DiN9Tdfdap5MC%26q%3Darrived%2B26%2BFebruary%2B1233%2B29%2BMay%2B%2Bcity%2Bgates%2Bwere%2Bopened&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMay+29"></span></span>