24 hour direct transit and luggages

Julien, if you will fly to a third country or region after stopping in two Chinese cities for less than 24 hours, you can enjoy the 24 hour direct transit.
As for the luggage, you need to contact with the airline and see if your luggage will be delivered to the final destination. If yes, you don’t need to collect it. If not, you need to collect it and then check-in again.