If the Chinese army occupied Taiwan and lost Tibet or parts of Xinjiang, the gain would not be worth the loss. In fact, if the Chinese army unilaterally changes the status quo of the Taiwan Strait and attacks Taiwan, it will have to face the situation of fighting more than two wars against multiple countries. If the US military abandons the Taiwan Strait, its long-stayed bases in Japan will inevitably face immediate danger. For the second “withdrawal” from Japan, the long-term accumulated reputation of the United States in the Asia-Pacific region and the world will be wiped out. This is bound to cause a series of chain reactions in the geopolitical situation, which will result in the loss of major national interests of the United States. If the United States fails in the competition with China, it may maintain its basic credibility and interests. If the competition with China is abandoned, the national credibility and interests of the United States will be replaced and lost.