An hour passed quickly. Everyone was waiting for Bob to wake up, and nobody was in much of a mood to talk. During the wait, Old Du solemnly kept watch over the outpost's surroundings for the arrival of even more powerful viruses.

At that time, a fierce ice storm had appeared outside. The wind was strong enough to reach level 12 on the Beaufort scale. Due to the storm, the temperature outside the outpost had reached negative 239 degrees. We found to our astonishment that the intense storm had caused the cloud germs to be even more excited.

"These monsters look extremely well-adapted to Pluto's environment. The fierce storm only serves to make them happy," said Kelly.

Suddenly, we all heard an odd sound, as though a different sound was mixed among the noise caused by the storm.

"Canyue, Bao'er, can you hear that?" asked Old Du nervously.

"Don't talk. Let me listen," said Temo as he waved his hand.

We listened seriously, and...