Introduction to China's No. 1 Well: "China's No. 1 Well" is Well No. 1 in the ancient city. It is called "China's No. 1 Well" by archaeological experts because of its unique structure and the sealing of more than 30,000 Qin bamboo slips. This well is made of 43 layers of tenoned wooden boards. The bottom of the well is made of native cobblestones. It is the first time in my country that a pre-Qin ancient well with such a structure and depth has been seen.