China should use its huge foreign exchange reserves to teach the United States a good lesson. First, sell some American securities (bond paper originally means writing paper, which is extended here), and extract some funds from it as anti-freezing measures (to prevent funds from freezing). This will also provide some hints and warnings for the United States to show off its military strength in the South China Sea of China. Second, teach Vietnam a lesson, as Deng Xiaoping did in 1974 and 1978, so as to avoid the domino effect and prevent other Asian countries from following suit. Third, explore the possibility of using China's economic strength to attack Vietnam.