1927 in may, Yang Jingyu joined China as the secretary of Fushun special branch of the CPC. After the September 18th Incident, he served as the secretary of the Daowai District Committee of Harbin, and later as the secretary of the CPC Harbin Municipal Committee and the acting secretary of the Military Commission of Manchuria Provincial Committee.
1932, Yang Jingyu established the Nanman Guerrilla of the 32nd Army of the Chinese Workers and Peasants Red Army in the northeast, served as the commander and political commissar of the Northeast People's Revolutionary Army 1 Army 1 Independent Division, commander and political commissar of the Northeast Anti-Japanese Coalition Army 1 Army, and the commander and political commissar of the 65433 Army dealt a heavy blow to the Japanese army, which greatly promoted the development of the Northeast Anti-Japanese Movement.
Yang Jingyu was shot several times and died heroically because of the traitor's informer. After Yang Jingyu's sacrifice, the Japanese army cut off his head, cut open the belly of the corpse, and found that there was no grain in his belly except undigested bark, grass roots and cotton wool, which shocked the ferocious enemy.
In order to commemorate the glorious life of Yang Jingyu's heroic anti-Japanese war, 1946, China decided to rename Mengjiang County, where Yang Jingyu died, as Jingyu County. 1958 On February 23rd, Yang Jingyu's head and body were ceremoniously sacrificed and buried in Jingyu Cemetery, Tonghua, Jilin. .