 Complete the following phrase:  Although Hua Guofeng, who succeeded as Chairman of the Chinese Communist Party and the great helmsman, in 1976, tried to carry on the Maoist rhetoric and to gain an authority like that of Maos. He also allowed the rehabilitation of many of Dengs allies, who, calling for economic reform, then revolted against him. During the 1978 working conference held in November, preparing for the plenum, Chen Yun raised the six issuesBo Yibo, Tao Zhu, Wang Heshou and Peng Dehuai; the 