C1538 It Was as If There Was No End to It

"What is that sound?"

Liu Lei frowned.

The sound in the gas was too strange, as if there were countless bugs crawling around.

But this was just a description, he felt that it was impossible to really have so many bugs inside.

After all, this was just gas, not some kind of physical space that could hold living things.

However, just as Liu Lei took this idea for granted