What does the travel agency mean by pulling a caravan?

It refers to one of the forms of tour groups arranged by travel agencies. A tour group is usually organized by a travel agency, and one or more special tourist buses or minibuses are arranged as the means of transportation to take the members of the tour group from the starting point to the tourist destination, and then the necessary tour guides and itinerary arrangements are provided during the tour. Travel agencies are responsible for booking hotels, scenic spots tickets, catering and other services, and providing relevant travel information and suggestions for tour group members.