The exchanges between the Chinese and US leaders on Thursday and Friday have provided much-needed strategic guidance for the future of China-US relations. The two sides agreed to build a "constructive China-US relationship of strategic stability". The "constructive strategic stability" means positive stability with cooperation as the mainstay, healthy stability with competition within proper limits, constant stability with manageable differences and lasting stability with expectable peace. The new vision for relations between the world's two largest economies indicates that both sides recognize the need to prevent confrontation and manage differences prudently. The Taiwan question remains the most important one among all the issues affecting bilateral ties. If it is handled properly, the Sino-US relationship will enjoy overall stability. Otherwise, China and the United States will have clashes and even conflicts, putting the entire relationship in great jeopardy. Yet certai...