Liu Kai reacted quickly and ignited a corner of the crude oil.
Bright yellow flames ignited instantly, and the temperature inside the tunnel felt noticeably higher in an instant.
Thick black smoke followed.
"Activate sealing mode and emergency oxygen supply mode."
The exoskeleton automatically seals itself when it detects the presence of toxic gas or a drop in oxygen levels.
Liu Kai continued his actions.
As they retreated, they released more crude oil into the increasingly intense flames.
When heated by flames, the viscous crude oil becomes softer and easier to ignite.
In just a short moment, the entire tunnel was completely enveloped in thick black smoke.
The billowing toxic smoke rapidly surged to both sides under the influence of thermal convection.
but.
Liu Kai covered the direction leading to the collapsed hole in the street with a tarpaulin.
Most of the toxic fumes could not pass through and could only rush towards the deeper Japanese stronghold.
"Beep beep, beep beep, beep beep!"
The pre-set countdown began softly.
This means the ice shielding device has been activated!
Sure enough, Liu Kai saw the burly man's expression change drastically through the scan.
He slammed his fist on the table and stood up, shouting at the people outside.
It seems that communication has indeed been lost.
At the same time, the two guards standing on the perimeter also noticed something.
In the dim light, something strange seemed to be surging in the darkness ahead.
The two carefully turned on the tactical flashlights on their rifles and shone them into the darkness.
That unforgettable scene left them frozen in place in shock!
Thick, black smoke filled the entire spacious underground tunnel.
The thick smoke seemed to conceal countless intangible evil spirits and ferocious beasts.
They surged, rolled, and covered each other continuously.
It surged in with overwhelming force!
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