Below, there are busy people, dressed in uniform, dark blue prison uniforms, neatly organized.

The most instructive thing that cannot be ignored is the cauldron in front of them, which is two or three meters in diameter, boiling hot oil, and the gap is connected to a pipe with a diameter of half a meter.

Smoke billowed from the air, and despite the huge exhaust fans on the walls on all sides, the air still smelled of greasy and foul odor.

The prison guard took them to the bottom and pointed to the old clock hanging on the wall, "Let's finish six hours of work today before we can get food." ”

Gu Sanning asked, "What exactly needs to be done?" ”

The prison guard frowned impatiently, "You don't have long eyes, don't you know how to look?" ”

"I'm afraid I've done something wrong......" Gu Sanning whispered.

The prison guard choked, impatiently pointed to the two unattended oil pans nearby, and said: "One person is responsible for taking care of one, and when the oil is full, pull the red pull ring on the top, and the excess oil will flow away. ”

Gu Sanning followed her direction and saw an iron rod placed on the pipe next to the pot, wrapped in cotton cloth at the end, and a colander made of iron at the end.

"If you can't finish today, you won't have anything to eat." There was a threat in his words, and the guards strode away on the stairs.

Gu Sanning observed the neighborhood, the prisoners who worked here were in good order, there was no prison guard to supervise them, and they also spontaneously went to do the work at hand.

Gu Sanning took the tools and climbed the small staircase, and when he got closer, he could intuitively feel the oncoming heat wave, and he couldn't help but stand a little farther away, and the same was true of He Xi not far away.

After five long hours of fishing, and two more oils in the middle, Gu Sanning observed a lot of strange places.

This high-security prison is an industrial prison, and the factory-like environment is not strange, but what is strange is what is poured into it.

Is it garbage?

Not quite right.

There are no more than three types of garbage disposal, landfill, incineration, and composting.

Never heard of the need to boil in a pan of oil to slag.

What's the point of this waste of human resources?

Gu Sanning really didn't understand, his eyes fell on the bubbling hot oil on the oil pot, skillfully scooped up the residue inside, and poured his backhand on the bucket at the bottom of the stairs, in the process 'accidentally' shook off a few fine pieces, making a very light noise, without attracting anyone's attention.

Gu Sanning stepped forward quietly, stepped on the oil residue on the soles of her feet, and with an extremely small and crisp click, she put away the iron net, and glanced faintly at the residue of the ground that was broken into slag and oil and water.

Judging from the strength of the foot just now, the sound, and the fragments, it can be preliminarily judged to be something like fat.

Proof of this is precisely the oil in this pot.

There were two oils before and after, and the things in the pipeline were intermittently put in, and the residue was removed around, but there was still a lot of oil and water.

When it comes to fat boiling oil, Gu Sanning immediately thinks of lard, but the oil in this pot is too dirty, it has been dark for a long time, and there is a foul smell wafting there, which really doesn't match lard.

The smell is strangely familiar, too.

It seems to have smelled somewhere.

Gu Sanning thought carefully about this journey, and the picture could not help but freeze on the scene of the truck unloading when he first entered the factory.

There are water stains on the ground, the sacks are wet, and the smell of corrosion is still inevitable in this hot weather.

Shouldn't it be...... Corpses, right?