Chinese internal flights for code: 103

It is not clear from the itinerary description, but are we taken to the airport by the guide and escorted to the correct check-in area in the terminal for the internal flights to Xian (Day 04), Shanghai (Day 06) and Guilin (Day 08) ???

The itinerary only says "... you will take a flight to ... ", so we are unsure what happens when we change cities. Please can you advise ASAP as we are very interested in this option.