相成相助xiāng chéng xiāng zhù

complement and support each other
❍ 共产党为工农阶级奋斗并引导其参加国民革命，决无碍于国民党领导各阶级努力国民革命，转而在实际工作上更可收～之益。(《周恩来选集》上—2) A Communist Party serving the workers and peasants and guiding them onto the path of national revolution will in no way hinder the Kuomintang in its leadership of the various classes working for the revolution. On the contrary,both parties will benefit by com plementing and supporting each other in their prac tical work.