(2) There are libraries, military homes and amusement parks to the west of Zhuyuan Road.
(3) The bookstore is in the northeast of the school, and Xiaojun's home is in the southwest of Xiaohui's home.
(4) The supermarket is located to the east of Haihui Road and to the south of the bookstore, and it is marked as follows:
;
(5) Xiaojun's route to the bookstore:
Starting from the home of young soldiers, pass Zhuyuan Road eastward along Xiangshan Avenue, then eastward to Haihui Road, and then northward to the intersection of Changning Avenue and Haihui Road. The bookstore is at the northeast corner of the intersection.
So the answer is: library, Xiaohui home, bookstore, library, Xiaojun home, amusement park, northeast, southwest.