Even more free opinion was tolerated though the official ideology remained unchanged. The third session of the Nation People’s Congress, held in September 1980, represented a watershed in the history of Communist China. It take the process of post-Mao change a big step further. These are : to separate party and government posts, and to end concentration of too much power in individual leaders, to consolidate the concept of collective leadership, to induct comparatively younger men into responsible positions, and to end the practice of life-long political vocation for ageing leaders. On the economic side, the emphasis is on decentralization and liberalization in the economy , which is reflected in the 1982 constitution.