Last time I went to Jiugong Mountain to pass the hidden water cave, because of time reasons, I didn't go there. Baby always thought about it. Finally, I had time to show him the style of the underground Pearl Dragon Palace. It was a boat ride and a train ride. Baby was not happy anymore. Maybe the baby was too young. It was still a little scared after a long time in the cave. I refused to come down all the way, suggesting that there were some places in the cave dripping water and the amount of water. When it's raining, it's better to wear a long sleeve with a cap.