This paper aims to review the factors inducing China's successful economic transformation, so as to find the causes of the subsequent economic slowdown, from the New Institutional Economics (NIE) viewpoint and the Marxian viewpoint, respectively. The former school is primarily concerned about the "supply-side" driver (changing rules of game for producers) of increasing economic output and efficiency, while the latter is basically sharing with the Marxian concern of the "demand-side" driver (an egalitarian pattern of income distribution which underpins mass-consumption) of increasing economic output and sustainability. NIE emphasize that unless a free and open market for ideas is created, China cannot sustain its economic growth or advance i...