"Quick, test the water!" Qi Kaiyou immediately ordered the people beside him.
When the water level suddenly rose like this, the most likely explanation was that another source of water had flowed in.
It might have come down from the mountains, or flowed in from another river.
Finally, it might have come from an underground river.
Underground rivers and surface rivers were connected in many places, so underground rivers could often affect the flow of surface rivers.
They could find out what was happening by testing the water quality.
Whether another river had suddenly flowed in, mountain runoff had entered, or groundwater had surged up, the water would contain distinctive substances.
By comparing those substances, they could get a general idea of what had happened.
At Qi Kaiyou's order, someone immediately took out an instrument and various test strips and began testing the water.
After a series of practiced, professional procedures, one of the people suddenly exclaimed in delight, "Mr. Qi, maybe our earlier theory was right."
"What is it?" Qi Kaiyou asked at once.
The person explained, "The water contains a large amount of the special minerals found in underground rivers. Our earlier samples didn't contain any, which means a large volume of underground water has flowed into this river over the past couple of days."
"Really? That's wonderful!" Qi Kaiyou immediately looked thrilled.
If that was true, then their theory was completely correct. Youcheng's unusual situation would be one of the most significant discoveries in the field of fish research.
They had verified their theory, and if they found the underground river, their investigation would be worthy of inclusion in relevant reference books.
Qi Kaiyou took the test results and confirmed that the water contained those special minerals.
Just then, his phone rang. It was another expert, who