SiegeSiege of Yen-Men Fortress14 Sep 615 · 37.87° N, 112.54° EOpen on the mapWikipediaOpen on the mapWhat the records sayWhen14 Sep 615KindSiegeCoordinates37.87° N, 112.54° EDescription615 siegeThe sourceWikidata: battles and siegesWikidata contributorsCreative Commons CC0 1.0 (public domain dedication)Source pageNearby in time and placeBattle of Huoyi11 Sep 617 · BattleBattle of Qian Shui Yuan29 Nov 618 · BattleBattle of Hulao31 May 621 · BattleBattle of Yanshi8 Oct 618 · BattleXuanwu Gate Incident5 Jul 626 · Coup