Second Battle of Guilin
1930 CE.
Shown on the map at 25.275°, 110.296°.
The Second Battle of Guilin was fought between the invading Hunan Army, allied to the forces of Chiang Kai-shek, and the forces of the New Guangxi clique personally commanded by Li Zongren. Li was facing a second invasion by the forces of the Yunnan Army (also allied to Chiang Kai-shek) targeted at Nanning. Li was forced to withdraw his forces from Guilin.
Text from the Wikipedia article Second Battle of Guilin, licensed CC BY-SA 4.0.