OP is likely worried about all the reports, which extend far beyond FT, of air carrier personnel denying boarding on the ground that what China considers to be a transit destined for HKG is not a transit because it is a stopover.

While the carrier personnel reference to standard IATA definitions of stopovers is incorrect, it has caused a lot of problems for many.

Unless one is privvy to actual complaint volumes, the fact that the complaints have dropped off on social media suggests that either people are not using TWOV (doubtful in the extreme) or that air carriers, most particularly AA, BA, DL, and CX, have spoken with Chinese authorities about what those authorities mean by "transit".