Ye Xingchen was half right. The drinks that Qin Tianming drank that day were indeed made from seawater.
This radiation could allow living creatures to evolve. Other than animals and insects, humans were affected as well.
However, humans were different from other animals. After drinking the seawater, people felt that their bodies had changed. They felt stronger and lighter. However, they thought it was because they now had food and water. No one thought about evolution at all.
Moreover, on the first day when they bought seawater, people would drink it directly because they were extremely thirsty. However, later on, it was not like they did not have electricity and pots. Those who could survive until now and could still afford seawater and seafood products were basically people with some ability. They had tools in their hands, so they naturally knew how to filter seawater.