Baiheliang was carved before the first year of Guangde in the Tang Dynasty (AD 763), with an inscription of 1 65,30,000 words, including stone fish 18, 2 Guanyin statues and white crane1only, among which the paragraph related to hydrological value 108 is the only one in the world. It is more than10/00 years earlier than the water level observation record of Wuhan Jianghan Pass Hydrological Station, the first water gauge set up by China on the Yangtze River in 865, so it is called "the first paleohydrological station in the world".

Baiheliang was carved before the first year of Guangde in the Tang Dynasty (AD 763), with an inscription of 1 65,30,000 words, including stone fish 18, 2 Guanyin statues and white crane1only, among which the paragraph related to hydrological value 108 is the only one in the world. It is more than10/00 years earlier than the water level observation record of Wuhan Jianghan Pass Hydrological Station, the first water gauge set up by China on the Yangtze River in 865, so it is called "the first paleohydrological station in the world".