The comprehension and translation of the last sentence in Manifesto of the Communist Party “Proletarier aller Lander, vereinigt euch!” (English: Proletarians of all countries, unite!) has always been controversial, because it can be interpreted in multiple ways. To understand this sentence, one should begin with such aspects as rhetoric, metrics, text linguistics, and Marxist philosophy. This article focuses on the intertextuality, cohesion, and coherence of the concept “unification” in the text, and the contrasting rhetorical form of “all” and “one” in the last sentence. The authors propose that the prevailing Chinese translation “Proletarians of the whole world, associate!” could be alternatively rendered into “Proletarians of all countries, unite!”.