Why does Japan like Manchuria so much?

Of course, the Japanese like Manchuria, which is a bit remote in China, but it is really a good place in terms of Japan's attitude towards the whole Northeast Asia. This is the mainland closest to the Korean peninsula. Right between Russia and China. You can attack Russia in the north and invade the Central Plains in the south. In addition, the northeast region is rich in resources, which provides sufficient raw materials for Japanese industry. Before the outbreak of the Pacific War, Manzhouli was Japan's largest supplier of raw materials, and Japan also made great efforts to build Manzhouli to ensure the safety of its lifeline. Manchuria is the basis of Japan's mainland policy. Losing Manchuria means losing the whole East Asian continent.