Who was the palace of Puyi, the pseudo-Manchu emperor in Dalizi Town, originally built for? Or what is the old house for?

The Puppet Manchuria Palace was built by the Japanese. It is said that the wall is more than five meters thick and cannot be penetrated by armor-piercing bullets, so it is extremely strong. The Japanese built it with the enthusiasm of building their own country. Originally intended to conquer China and move the emperor here as emperor. On the eve of Japan's surrender, the United States dropped an atomic bomb on the mainland, and Japan intended to give up the mainland. The whole country immigrated to Manchuria and stuck to it. This palace is the palace of the puppet Manchukuo, and the Soviet Union was asked to mediate relations with its allies. However, the Soviet Union declared war on Japan and attacked the Northeast. This plan was aborted, but the palace stayed, which was really balanced and the underground project was perfect!