Is Diaoyu Island ours? Why the Japanese are in power. . .

China, of course. Japan stole it quietly around 1890, and then snatched it in the war. However, according to the Potsdam Proclamation after World War II, Japan must return its illegally occupied territory without compensation, and the Diaoyu Islands, including the Ryukyu Islands, are actually returned. However, after World War II, especially in the early 1950s, neither the situation in China nor the Korean War with the United States was returned to China by the United States. After that, it was actually managed by the United States for a long time. By 1970, the United States gave the management right to Japan. At that time, Sino-US relations had not yet established diplomatic relations, and the relationship was definitely not good. ) So the United States would rather give it to Japan than China. But it only transfers management rights, not sovereignty. So according to international law, sovereignty belongs to China, but it has been under Japanese jurisdiction for a long time.