The first time into the bell milk hole will be cold, not let people feel that there must be a big event! Sure enough, the more and more dazzling, even if the legs have been trapped in only 10 degrees of water, there is no idea of closing the mouth and trembling, because here I feel a sense of crossing that I have never had, it seems that I am walking in this 80 million years of time tunnel! Fortunately, there are not many people, holding up the flashlight, and enjoying the wonders of nature at 360° without dead ends every step. Especially the adventure mode of Longhedong is even more exciting!