Tomb of Changbai Twins

A hundred years ago, someone found a secret message on an ancient tablet in the mountains: "The emperor died and the treasure was hidden in Xian." Later, some scholars inferred that the stone tablet was very old by visual inspection and the handwriting was blurry. It should refer to what was recorded in the "Great Wilderness Northern Classic" in the "Book of Mountains and Seas": "In the Great Wilderness, there are mountains with unbridled names, and there is the country of the Sushen family." Buxian Mountain was later called Taibai Mountain and is now called Changbai Mountain. There are many mountains in Changbai Mountain, and there are sixteen peaks with names alone. People have been searching for it for generations, but the result is unknown. However, I don't know when another secret phrase spread: the twelfth lunar month is white and the sky is blue and frozen, and the Buddha is holding a butterfly bone on his head at midnight. And this story begins with a group of academic stragglers going to Changbai Mountain to explore for secret treasures...