"…… The Young Yin was broken down into (01), the Yang of Young Yin "Li "(101), and the Yin of Young Yin" Zhen "(001)..." She quickly pressed down a series of numbers, and then quickly retreated.
One could only hear the sound of a mechanism being activated. The brick ground slowly split apart, revealing a square hole. Li Jianlan looked closer and a long staircase extended down from the gap.
Li Jianlan hesitated for a moment before walking down.
After descending the stairs, there was a long corridor with brightly colored murals carved on all four walls.
The typeface of this era was similar to the traditional typeface of ancient times. She could barely understand it. After a while, she roughly understood the contents of the mural.
It was said that there was a small country called "Langyu
