Introduction to the first scene of the Wordless Heavenly Book: The Wordless Heavenly Book is 15 meters high and is located in the 100-meter long corridor artificially excavated in Sidaogou, Tu'er Mountain. It is a complete address section with very distinct soil layers. Although the section has no words, it records the history of Dayao culture and is of great significance to the study of the period of Dayao culture.