Ill. Opening to the outside world as a long-term national policy a. peaceful and stable external environment favourable to the open door policy b. the world is inclusive and open to china C."one country two systems" in dealing with issues of Taiwan, Hong Kong, and Macao 2 Sino-US relations a smooth development of the bilateral relationship b obstacles in the bilateral relationshipIII. Opening to the outside world as a long-term national policy. a. peaceful and stable external environment favourable to the open door policy b. the world is inclusive and open to China c. “one country, two systems”, in dealing with issues of Taiwan, Hong Kong, and Macao. 2 Sino-U.S. relations a smooth development of the bilateral relationship b obstacles in the bilateral relationship