Cai Qi, the fifth-ranked member in the Communist Party’s hierarchy, has been picked to head the Central Party School, the top training ground for cadres. Cai, 70, sits on the elite Politburo Standing Committee and is secretary of the party’s secretariat as well as director of the party’s general office. Responsible for daily operations of the party’s nerve centre, Cai is often referred to as President Xi Jinping’s chief of staff.