Route notes
Why this routing works
This three-week itinerary is built as an open-jaw multi-stop ticket: Paris to Hong Kong, then an overland segment from Xi'an, followed by a flight from Kashi back to Paris. That structure is useful when part of the route is not flown, because it keeps the air ticket aligned with where the overland section ends rather than forcing a backtrack.
With 2 nights in Hong Kong, the schedule creates a short stop before the overland portion begins. From a logistics standpoint, that helps separate the long-haul departure from the inland segment and makes the transition between the flight ticket and the ground portion straightforward.
Because this is an economy itinerary over 3 weeks departing in September, timing is relatively compact and the route sequencing matters more than adding extra stops. The key planning point here is that the ticket is not a simple round-trip: it combines an outbound long-haul, a self-contained overland gap, and a return from a different city.