According to Baidu Encyclopedia, in the articles of association of * * * producers' union drafted by friedrich engels and william wolf, the slogan of "proletarians all over the world unite" was written for the first time at the first congress of * * * producers' union in June 1847, to replace the old slogan of "brothers all over the world" with vague boundaries of the original justice alliance. 18471during the second congress of the proletarian league from October 29th to February 8th, Karl Marx and friedrich engels were entrusted by the congress to draft a new program of the league, and this slogan was formally written into the first programmatic document of the proletarian party, the * * Declaration of the Proletarian Party.

Proletarians all over the world unite! It is the strategic slogan of the proletarian liberation movement and the motto of the national emblem of the Soviet Union. This slogan is the basic slogan of the proletarian political party, the product of the development of the workers' movement and the embodiment of Marxist proletarian internationalism.