The firefly hole is not allowed to take pictures. The itinerary at 7 o'clock in the evening is set. Lake Tianao is very beautiful and beautiful. The scenery by boat is also superb. After watching the firefly return trip, the sky is full of stars. It is shocked. It is simply the feeling of the dark reserve. It is so beautiful. The fireflies are also very beautiful. There is a big cave inside. Blue fireflies flashing, very dreamy!