I have a group (in 2018) traveling from multiple origin points in the US to Hong Kong (HKG). Then, from HKG, the group will travel to Shanghai (PVG). Then, within the 144-hour time limit, this group will travel to Tokyo (either NRT or HND, not sure yet). Everything I know or have read leads me to believe that this itinerary complies with the rules of the 144-hour China Transit Without Visa rule (TWOV). But I would LOVE to get some agreement or confirmation from more experienced international travelers. So, I'm humbly asking... 1) Does this itinerary meet China's TWOV rules? And 2) Any gotchas my travelers should know about or be prepared for? Many thanks in advance.