中華ソビエト共和国
Ren was reelected as a Politburo member on 7 January 1931 during the extended Fourth Plenary Session of the CCP. On 7 November, during the First Session, he was elected a member of the Central Executive of the Chinese Soviet Republic. Following the shift of communist influence from Shanghai to the Jiangxi region, Ren protected many party members such as Zhang Aiping who were implicated during the "Anti-Bolshevik League incident".