Official announcement available?

The best way how to see the real official interpretation is to insert your planned itinerary into Timatic. Timatic is really the only official interpretation available and in the same time also the most important because exactly Timatic will be consulted when you check-in at your original destination.

In reality, the only detail that is important is that the immediate points before and after your Chinese destination are in different countries or eligible territories (eligible territories are Hong Kong, Taiwan and Macau).

By the way, it is important to know that 72 hour visa free transit is available only on a few destinations because it is 144 that is prevalent, especially in the most frequented Chinese destinations.

Thanks for your quick awnser! 144h visa free travel would be even better... ist timatic available for the public or only for officials?

United Airlines website offers public use of Timatic.