Complex sentence: His economic reform policies and open sympathies to student demonstrators during the Tiananmen Square protests of 1989 placed him increasingly at odds with conservatives within the party leadership, namely Premier Li Peng, and also began to lose favour with paramount leader Deng Xiaoping.
Split into simpler sentences: His economic reform policies and sympathies to student demonstrators during the Tiananmen Square protests of 1989 placed him at odds with some members of the party leadership, namely Premier Li Peng. Zhao also began to lose favour with paramount leader Deng Xiaoping.