Introduction to Baotuquan Campus: The north gate of the campus was originally the gate of Qilu University. The upper part of the gate adopts the architectural style of double eaves and bucket arches. The eaves are decorated with colorful paintings. Below are four square white stone pillars. In the middle of the stone pillars is a plated iron fence. In the middle of the forehead is the inscription: "Four Gilded Officials of Shandong University."