At the Fifth Plenum held in 1980, Peng Zhen, He Long and other leaders who had been purged during the Cultural Revolution were politically rehabilitated. Hu Yaobang became head of the Party Secretariat as its Secretary-general. In September, Hua Guofeng resigned and Zhao Ziyang, another Deng's ally, was named Premier of China. Deng remained the Chairman of the Central Military Commission, but formal power was transferred to a new generation of pragmatic reformers, who reversed Cultural Revolution policies to a large extent during the Boluan Fanzheng period. Within a few years from 1978, Deng Xiaoping and Hu Yaobang helped rehabilitate over 3 million "unjust, false, erroneous" cases in Cultural Revolution. In particular, the trial of the Gang of Four took place in Beijing from 1980 to 1981, and the court stated that 729,511 people had been persecuted by the Gang, of whom 34,800 were said to have died.