Go out on the last day of National Day. Take the green train to Boshan and walk a few kilometers to Kaiyuan Cave. As a Zibo person, I came here for the first time. The overall environment of the park is good. There are relics of the Tang Dynasty in the cave, but I feel that many stone rafts have been broken, and the original ecology of the newly developed cave is not well maintained. After the cave, take a small train to Bai Bird Forest, greening is OK, but there are many self-funded projects. The price of the hotel inside is not outrageous. Overall good!