China is using the delay tactic with the God Emperor. Xi makes the right noises at their first meeting, but Xi has no intention of enforcing U.N resolution 2270, and will continue to use the "Livelihood" provision, which allows the importation and exportation of goods to/from Best Korea. Unless we are heavily subsidizing the U.S. coal shipments to China, the Chinese State Owned Enterprises cannot afford to pay market prices for coal. Best Korea coal is low quality, very cheap, dirty, but gets the job done.
China is waiting for another world event to distract the U.S. from the Korea issue, then it will be business as usual. Both South Korea and China would like this issue to be kept status-quo. China believes in "Stability Above All". South Korea and China do not want a unified Korea, a unified Korea would drastically change South Korea's economy, and China does not want a U.S. ally on it's border. Best case would be for China to take care of Fat Boy, but they wont.....