Differences between the Soviet Union and People's Republic of China economy?

What are the differences between the economic polices of the People's Republic of China and the Soviet Union? Since adopting market reforms in China. China has allied it's self with the United States. Also the Soviet Union was still practicing socialized economics. Socialized economics does not bring the same amount of money from foreign nations as capitalism. During the Reagan years Reaganomics resulted in a bomb for the U.S economy and the economy of the Soviet Union, already very weak, worsened. My point of the thread is, What is the difference of the economy of the People's Republic of China and the Soviet Union?