Cultivators who were able to make it to the Lifeless Riverbed were no weaklings and almost every one of them was extremely sensitive to treasures like this one. ‘To keep these ants here’ would definitely imply that these experts wanted to kill all of them instead of letting them leave.
After everyone heard this sentence, all the Heavenly Immortal experts tried even harder to escape in all four directions.
If they were outside, the five of them would be confident that they could contain all hundreds of them. However, now that they were in the Lifeless Riverbed coupled with the fact that they came with regulation talisman on them, the five of them were unable to capture everyone at once.
Mo Wuji was even crazier as he tried to escape. Fortunately, nobody noticed this fella who ran towards the unknown depth of Lifeless River instead of towards the surface.