Chiến dịch bao vây đầu tiên chống lại Liên Xô Hubei-Henan-Anhui

The first encirclement campaign against the Eyuwan Soviet was an encirclement campaign launched by the Chinese Nationalist Government against the Eyuwan Soviet, a Communist base located in the border region between Hubei, Henan, and Anhui provinces. The Fourth Red Army responded with its first counter-encirclement campaign and successfully defended the soviet. The Nationalist attacks lasted from November 1930 to 9 March 1931.