Jiu Laodong is very remote and there are not many tourists. The cave was very cold, the lights were very dark, and sometimes the doorman was not there, so he could only light the flashlight himself. Bats flew around the cave, and the atmosphere was very strange. It is especially suitable for exploration, but it is recommended to accompany you. Jiulaodong was once an underground river. Billions of years ago, with the rise of Mount Emei, the water went to the cave, and the erosion of the landscape formed the largest underground palace on Mount Emei. The cave is divided into three sections, the first section can walk upright; the second section starts to appear fork holes, only crawling; The third section is a cracked cave, which is difficult for people to squeeze in sideways. There are many branches of the road in the cave, and you need to pay more attention when playing, so as not to waste time on the wrong road.