Passage to the Outside World

Upon witnessing this phenomenon, not only did Chen Chen not allow himself to relax, he even took several steps backward.

He remembered several jokes from a science fiction novel, one of them went something like this: 

A common plot in science fiction stories was of people in the future riding in spaceships encountering foreign planets of almost completely identical habitat as the Earth. For example, similar atmospheric pressure and similar air composition. The only discrepancy was the local flora and fauna.

Thus, the crew of the spaceship, dressed in common clothes, stepped into the planet without any defensive measures.

However, a study in Microbiology proved that this was a suicidal maneuver.