Introduction - If you have any usage issues, please Google them yourself
-Free to the net means that the school campus attractions in your plans, the figure fixed-point of their main attractions, storage spots number, name, profile and other information. Requires the ability to answer questions about attractions introduction, tour passing by and so on. Requirements: (1) check the relevant information sites (2) query graph the shortest path between any two spots. (3) The query graph for all paths of any two spots.