Asia Pacific 1930: Central Plains War

Despite the claims to unity, Chiang Kaishek's hold over China was tenuous. In 1930, Yan Xishan, the Guominjun and the Guangxi clique turned against him in the Central Plains War.


Treaty Ports

Treaty ports were towns opened to foreign trade by unequal treaties in China. Foreigners operating within treaty ports enjoyed extraterritoriality, being subject to their home country’s laws. Unlike concessions such as Hong Kong, these territories were not directly leased by the foreign powers and did not have sizable foreign garrisons.

Treaty ports are not shown in the maps after the 1911 Chinese Revolution in order to give a clearer picture of the chaos in China itself and as by that point their numbers had stabilized. After the revolution, some of the smaller ports were phased out while the others became less important as the situation in China meant that only the concessions could provide foreigners with security. Most, however, still continued on into the 1940s when the Japanese entry into World War II and foreign agreements with China brought them to an end.

See this map for treaty ports in 1907, when the system was at its peak.

Yangtze River

By the terms of the Treaty of Tientsin (1858), foreign vessels including warships had the right to free navigation on the Yangtze River. In practical terms, this right extended only as far as Yichang until 1900, when advances in steam navigation allowed access as far inland as Chongqing.

Main Events

22 Dec 1929 KMT accept peace with USSR

The Khabarovsk Protocol ended the Sino-Soviet Conflict and restored joint Soviet-Chinese administration of the Chinese Eastern wikipedia

? Feb 1930 Yan Xishan denounces Chiang Kaishek

Yan Xishan denounces Chiang Kaishekin wikipedia

1 Apr 1930 Yan Xishan expels Chiang Kaishek’s men from Tianjin and Beiping

Yan Xishan expels Chiang Kaishek’s men from Tianjin and Beipingin wikipedia

? May 1930 Outbreak of Central Plains War

Chiang Kaishek and his allies vs Yan Xishan, Feng Yuxiang and the Guangxi cliquein wikipedia