Siege of Lüshun
1634 CE.
Shown on the map at 38.809°, 121.263°.
The siege of Lüshun was a military conflict between the Later Jin and Ming dynasty. In the summer of 1634 the Jin attacked and conquered the port city of Lüshun from Ming.
Text from the Wikipedia article Siege of Lüshun, licensed CC BY-SA 4.0.