What do you think Mao meant when he called on students to root out the poisonous weed in the schools?

When Mao called on students to "root out the poisonous weed" in schools, he was urging them to identify and eliminate elements of bourgeois ideology and traditional Confucian values that he believed were detrimental to the communist revolution. This metaphor implied a need for radical change and the promotion of revolutionary thought among the youth, encouraging them to challenge authority figures and outdated beliefs. It reflected Mao's broader goal of using education as a tool for ideological purification and social transformation during the Cultural Revolution.