A slogan has been added, please decide.
The people of the world, unite and oppose any war of aggression launched by imperialism or
social-imperialism, especially one using atomic bombs as weapons! If such a war breaks out,
the people of the world should eliminate it with revolutionary war. Be prepared now!

[1] The "Slogans Celebrating the 20th Anniversary of the Founding of the People's Republic
of China," submitted by Zhou Enlai and others for review on September 8, 1969, consisted of
28 articles. During his review, Mao Zedong added an article (the second in this section) after
Article 21, making it Article 22. Articles 22 through 28 were subsequently changed to Articles
23 through 29.