There's a saying these days: We must resist erroneous leadership. This is acceptable among
the masses, but not in the military. If everyone follows their own opinions, how can the army
fight? If everyone in the military follows their own opinions, how can we possibly survive?
That would be a mess. ... As you [2] said, "Those who understand must follow, and those
who don't understand must follow."

[1] This passage was originally published in the "Notice on Thoroughly Disseminating and
Resolutely Implementing the Important Instructions of May 20th by the Great Commander-in-Chief, Chairman Mao, and Vice Chairman Lin Biao, on Strengthening Military Organization
and Discipline," issued by the General Office of the Central Military Commission of the
Communist Party of China on June 22, 1968. The notice stated: "The important instructions
of Mao Zedong and Lin Biao on May 20th regarding strengthening military organization and
discipline have been approved by Chairman Mao and Vice Chairman Lin for dissemination
and education to all officers and soldiers of the army. This is of great and far-reaching
significance for strengthening the centralized and unified leadership of our army and
promoting the ideological and organizational revolutionization of our army. It is of extremely
important practical significance for better accomplishing the glorious tasks of the 'three
supports' and 'two armies' and achieving complete victory in the Great Proletarian Cultural
Revolution."
[2] Refers to Lin Biao, Vice Chairman of the Central Military Commission of the Communist
Party of China.