Introduction to Xuanhui Tower: Xuanhui Tower is located in Qinglonggang. The altitude is 198.5 meters. There is an underground river under the hill, about 3400 meters above the surface, and the water temperature is 50 degrees Celsius. Legend has it that there is a green dragon in the river, which is tens of meters long and 50 centimeters thick. During the drought season, the green dragon appears, thundering and lightning, and heavy rain pouring. Qinglonggang has left its reputation.
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