C1945 What's the Key(part I)

"How should we find the key? If I only try my luck everywhere without any purpose. . . Then the probability of finding it is too low. . . After all, we only have less than forty people. "

The people of Fire City Team did not know that their every move was being observed by others. Under Qin Yunyi's lead, they flew to the areas outside the stronghold city and aimlessly searched