Pakistan was pro-American after the founding of China. In the 197s, after the Second India-Pakistan War, the United States was the first to abandon Pakistan, which he called "Asia's best friend". During the Third India-Pakistan War, India dismembered East Pakistan, which is now Bangladesh. China was supporting Pakistan at that time, and sold a large number of J-7 s and J-6 s to Pakistan to fight against India. On the other hand, China also threatened India to withdraw its troops from Pakistan, and then China and Pakistan slowly approached.