Not only that, but there were also several surprising and unexpected discoveries!
The figure hiding under the tree canopy vanished again like a ghost.
Instead of using the extremely energy-consuming long-distance teleportation, Liu Kai opted for spatial folding.
Hidden in a higher-dimensional spatial interlayer, Liu Kai moved rapidly towards the third underground level.
The solid ice, the thick soil, and even the reinforced concrete that can defend against bunker-buster missiles.
At this moment, it was as if there was nothing in front of Liu Kai, passing through him effortlessly.
Just moments later, he passed through layers of blockades and defenses and appeared in a dark, sealed room.
This is not a place where experts from various countries are detained.
Instead, it is a workshop responsible for the air circulation and purification of the entire underground shelter.
Right beside him, a huge machine was humming and running continuously.
Large air circulator.
Liu Kai smiled as he took out two large bottles of heptafluoroane liquid from his storage space.
"You little devils, enjoy your sweet dreams!"
The next moment, the heptafluoroane bottle in Liu Kai's hand vanished instantly.
A sound of breaking glass came from the air outlet pipe of the circulator.
Sevoflurane evaporates extremely quickly and is injected into the air duct along with the purified air.
After being diverted through multiple manifolds, the fluid is pumped into every compartment of the basement from the first to the third basement level.
Sevoflurane is colorless and odorless.
The Japanese soldiers, still active inside the underground base, were completely unaware of anything amiss.
However, after only half a minute, their minds began to feel dizzy.
Those Japanese soldiers who took turns sleeping slept even more soundly.
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