In practically every school in China, teachers were abused and beaten, sometimes fatally. Some schoolchildren set up prisons in which teachers were tortured. But this was not enough on its own to generate the kind of terror that Mao wanted. On 18 August, a mammoth rally was held in Tiananmen Square in the center of Peking, with over a million young participants. Lin Biao appeared in public as Mao's deputy and spokesman for the first time. He made a speech calling on the Red Guards to charge out of their schools and “smash up the four olds” defined as “old ideas, old culture, old customs, and old habits”. Following this obscure call, Red Guards all over China took to the streets, giving full vent to their vandalism, ignorance, and fanaticism. They raided people's houses, smashed their antiques, tore up paintings and works of calligraphy. Bonfires were lit to consume books. Very soon nearly all treasures in private collections were destroyed. Palaces, temples, ancient tombs, statues, pagodas, city walls, anything 'old' was pillaged. The few things that survived, such as the Forbidden City, did so only because Premier Zhou Enlai sent the army to guard them, and issued specific orders that they should be protected. The Red Guards only pressed on when they were encouraged. Mao hailed the Red Guards' actions as "Very good indeed!" and ordered the nation to support them.
