When a tourist arrives on this island, he can set the tour schedule in the user class. As shown in Figure 4, there are six watching points to visit, and the number of PoIs denotes the order of the video clips. The total tour time of the navigation class is two hours according to the official site in the video class. The tourist arrives at this filming location at 2 PM and plans to catch ferry at 4 PM. Using the navigation function, he arrives at the number 1 location and spends more time than the expected time.