Nouvelle Quatrième armée
At the end of 1939, He Zhuguo led 2 cavalry troops to defend Henan. Soon, the New Fourth Army Peng Xuefeng guerrilla detachment entered Boxian, Huaiyang, and defended with He Zhu ’s Ministry. In 1940, Zhang Yunyi, chief of staff of the New Fourth Army, commanded the troops of the New Fourth Army north of the Yangtze River. Zhang Yunyi and He Zhuguo sent liaison personnel to each other's forces to discuss the battle together. Tan Youlin, deputy brigade commander of the New Fourth Army, etc., went to Yan'an to attend the Seventh National Congress of the Communist Party of China. He Zhuguo's headquarters issued a special pass to them. In 1940, the Japanese army transferred troops from North China to attack Fuyang. In cooperation with the New Fourth Army, He Zhuguo held Fuyang.