Original sentence: At the same time, as part of its aim of avoiding confrontation with the United States, the PRC has attempted to portray itself as the advocate of peace and stability in the Taiwan straits and the ROC government under Chen Shui-bian as dangerously destablizing the region, and in contrast to practice in the 1990s, has attempted to gain the support of the United States in restricting what it percieves as Chen's efforts to further Taiwan independence
Edited sentence: At the same time, as part of its aim of avoiding confrontation with the United States, the PRC has attempted to portray itself as the advocate of peace and stability in the Taiwan straits and the ROC government under Chen Shui-bian as dangerously destablizing the region, and in contrast to practice in the 1990s, has attempted to gain the support of the United States in restricting Chen's efforts to further Taiwan independence