Not all exports, you understand, but all dual-use exports:
China on Tuesday banned exports of goods that could be used for military purposes to Japan, a move that escalates tensions between Beijing and a key U.S. ally as disputes intensify over Taiwan. The Chinese commerce ministry said in a statement that any items that have a dual use — civilian and military — would no longer be exported to Japan.
The government did not offer specifics on which items would be included in the ban. But state-affiliated media said Beijing was considering whether to include rare-earth minerals.
Japanese leaders increasingly have linked Taiwan’s fate to Japan’s own security, with Tokyo’s new Prime Minister Sanae Takaichi warning that a Chinese move against the island could amount to a “survival-threatening situation” for Japan — a legal threshold that could permit military action under Japan’s self-defense laws.
The US Secretary of War cited the Fuck Around and Find Out principle in relation to Venezuala. It appears China is in the process of applying the same principle to Japan and everyone else who attempts to interfere with the Xinroe Doctrine in the South China Sea.