To put it simply, it means air tickets and hotels, and everything else (itinerary, catering, etc.) is handled by yourself. Much higher than the freedom of the team, but you can save yourself the trouble of contacting the air ticket hotel. Generally speaking, the air tickets are all team tickets, which are cheaper than what you can book. Of course, Ctrip will also provide many additional options during the ordering process, such as pick-up and drop-off, one-day car rental in a certain place, cruise tickets, tickets, etc., all of which can be purchased with extra money.