Which water in Duyun is meaty?

Jianjiang River and Tuanshan Underground River. The Jianjiang River is the main source of drinking water for Duyun City. Fishing, swimming and washing are prohibited in the river. The Tuanshan Underwater River is located in the Tuanshan Office, more than 30 kilometers west of the urban area. The entrance is at the third head of Tuanshan and the outlet is on the south bank of Madan, with a total length of more than 1,800 meters. The underground river is downstream of the cave. The underground river in the cave is about 20 meters wide, and the widest point is about 30 meters. Fishing in these waters can only be carried out in compliance with relevant regulations and using suitable equipment.