Originally Posted by
moondog
2. They should eliminate the direct flight rule, possibly with some exceptions (e.g. Canada, Germany, France, Japan, Korea should be okay, but it's cool if they prohibit some transit points)
You can obtain a green code if you stay in Korea for 30 days or longer before flying to China. This is explicitly stated on the Seoul Embassy website.
These transit bans are enforced by each individual embassy so there is no blanket rule.