Several challenges in the big ice cave are really enjoyable! I chose the most difficult line for Feilada Rock Climbing. It was very difficult but the sense of accomplishment after the challenge was successful! The big swing is also a thief, comparable to Queenstown! The project of forest exploration is also very enjoyable, and it needs to be combined with the hand and brain hahaha! The big ice cave is indeed a combination of natural and humanistic wisdom, the wonder of the cave and the low temperature created by man-made! Overall good!