Battle of Tsekee
1842 CE.
Shown on the map at 30.167°, 121.233°.
The Battle of Tzeki, Cixi, or Tsz'kí was fought between British and Chinese forces in Tzeki (Cixi), Zhejiang province, China on 15 March 1842 during the First Opium War.
Text from the Wikipedia article Battle of Tzeki, licensed CC BY-SA 4.0.