Mao and Deng could do this because both provided China with strong leadership. The challenge for the world now is that China has become politically pluralistic: no leader is strong enough to make wise unilateral concessions.
毛泽东和邓小平可以这样做是因为他们都拥有极高的威信。而目前世界所面临的挑战则是一个政治权威多元化的中国：没有领导人足够强势去做出明智的单方面让步。