What happened in the north and south of China in the all-metal frenzy?

Civil war, and then split in two, the north is close to the Soviet Union, and the south is close to Europe and America.

There are many NBs about China in Japanese anime. During the moonlight trip, the Soviet Union has completely cooked soy sauce. The United States and China compete for space. In Ghost in the Eggshell, China is a pole of the world, while the Chuka Federation is a disgrace. One of the Three Magi who attacked NERV's headquarters came from Beijing. . . Laugh at such things.