"Wow, are you ignorant"
Trade still happens but the ultra genius Kim with his paranoia has shut down cross-border trade. Now watch as N.Korea suffers from food shortages due to his policies.
China has repeatedly offered to make quick shipments of food with minimal crew to avoid covid infections and Kim is still rooted in paranoia. But it doesnt matter the common people will starve and die while he is sitting on the "throne" comfortable"
The point is this:
China is ready to assist NK but Kim rooted in his paranoia has shutdown trade