Acid-corroded skin, uneven.

The tattoos hidden under the skin are also blurred by the scattering of light.

Oil lamps, translucent skin, cast a blurry picture on the wall.

However, Song Nian clearly knew what this thing was.

This is an unremarkable structural diagram.

Circles, diagonals, straight lines, dotted lines, spirals...... Next to it is a clumsy drawing of a small figure, which seems to be manipulating these geometric figures.

But Song Nian could see at a glance what these strange symbols meant.

That's boilers, pipes, distillation, condensation, filtration...... Everything is unremarkable.

Any middle school student has probably played with these things and done a full set of operations in chemistry class.

But how could this thing be in this day and age!

The white light flashed a few times, and then, shattered, vanished.

The system clearly told Song Nian that yes, this thing is his task reward.

Reward: Filter Device Blueprint (Simplified).

Song Nian let out a long sigh.

She understood.

This is Guo Jiabao's real secret.

This large-scale filtration device is the root cause of Guojiabao's overnight wealth.

The strange and corroded things behind Guojiabao are a complete set of filtration equipment. Guojiabao did not yet have the ability to make corrosion-resistant steel, so those equipment were easily corroded by salt water, but this was not enough compared to the profits from selling illicit salt.

Whoever has this set of filtration technology can turn hundreds of miles of saline-alkali land into treasure.

And salt is one of the most precious treasures of this era.

With such technology, it is no wonder that Guo Jiabao will be targeted by the Black Sky Demon God Sect.

The previous cruel torture of taking internal organs alive and the torture of draining the blood of the whole body were all to force the owner of Guojiabao to hand over this filter device.

Whoever owns this device has almost inexhaustible table salt.

Song Nian let out a long sigh and put away the skin of the Guojiabao Castle Lord.

……

Guo Jiabao finished the inspection and seemed to have gained something.

For example, when the military team over there arrived here, they must have come to buy illicit salt.

Another example is to confirm that the person who transported the snow corpse to Guangqiu County is indeed a disciple of the Black Sky Demon God Sect.

Another example is that a mystery case was solved, and after it was reported, it was another great achievement.

But...... Chu He and Song Nian were still in a heavy mood.

Once at a time, I could only find clues to the Black Sky Demon God Sect, but I ...... Can't catch a living person!

The three of them walked along the road and slowly walked towards the pier.

The moonlight is bright and clean, and the saline-alkali soil glows with fine light, which is exceptionally soft.

Those salt piles, for the three people who already knew their use, were no longer terrifying, but a little warm.

However, Song Nian and Chu He were not in the mood to see the scenery.

Song Nian wanted to say something several times, but when it came to his mouth, he gave up silently.

She's really not fit to do this.

Seeing that they were about to walk to the edge of the dock, the two were still silent.

In my ears, there is only the sound of gurgling and ticking water.

Song Nian opened his mouth.

"Chu River."

Chu He glanced at her indifferently: "What? ”

Song Nian faintly felt that Chu He was a little angry and depressed, and bit his lip: "I...... Look at the moonlight tonight, you listen to this bubbling water, this ticking raindrops, life is actually ......"

Chu He glanced at Song Nian strangely.

Never mind! Song Nian chose to give up! Comforting people is such a person, I really didn't do it!

In the future, I can still ridicule it, this is good.

"Forget it, people like you, where you can appreciate the moonlight, where you can understand the beauty of this gurgling water and dripping raindrops, you are a martial artist."

Well, it's really ridiculous, handy.

Chu He's brows furrowed deeply.

"You mean, you hear the sound of the water and the raindrops?"

Song Nian was stunned: "Yes, you didn't hear it?" That's a good sound. ”

Chu He's brows furrowed even tighter.

"This river is a canal dug out, a pool of stagnant water, where does it come from? Raindrop? Tonight, the moon is shining high, the sky is clear, where are the raindrops? ”

Song Nian was stunned.

Oh, yes...... Could it be ......

I'm having auditory hallucinations?

Chu He slowly pulled out his long sword: "Zhao Da! ”

Zhao Da tacitly took out the steel knife and dragged it behind him.

The two of them hurried forward.

Song Nian was stunned for a moment and followed closely.

Dock.

Under the bright moonlight, there were corpses scattered everywhere.

Blood gushed like a river.

From the shore, tick-tock, it falls into the river, slowly dyeing the river red.

Song Nian was stunned.

Originally...... Just now...... All she heard was the sound of blood......

"What are you doing?" Chu He shouted loudly, making Song Nian come back to his soul.

"I'll do ......the autopsy right away," Song Nian hurriedly opened the roll of knives.

"I mean, look and see if there's anyone alive!" Chu He gritted his teeth and said.

Song Nian dropped the scalpel and rushed towards the dead bodies all over the ground.

……

The entire fleet, more than 80 people, was not spared!

The cause of death was almost always a cut throat.

Disaster happened in an instant, and there was almost only one wound on these people, and that was the throat.

And the weapons in their hands, without exception, are as white as new.

There was no one who hurt the perpetrators.

Song Nian could imagine that the assailants broke out and injured people in the night, and when they were caught off guard, these boatmen were not the enemy of the other party's move, and in an instant, they were killed and injured.

"Kill with a single sword...... There is no power to resist...... Chu He narrowed his eyes: "I know." ”

Song Nian walked along the stone steps of the pier to the water's edge to wash his blood-stained hands.

Whoa, whoa...... A slight voice came.

She jerked back, only to see a small straw boat half a foot long tied to the shadow of the wooden boat next to the pier. Below the straw boat, there was a large area of dark and dreary shadows.

This straw boat is moving gently.

"Ah!!!h

Chu He's face changed, and he took a leap and landed beside Song Nian.

"That...... That one...... Will move, will move. Song Nian grabbed Chu He's sleeve tightly.

Chu He wanted to check, but he didn't twitch his arm, he could only say, "Zhao Da, drag that thing up!" ”

Zhao Da smiled, directly used the rope on the wooden boat to lasso the grass boat, and dragged it ashore.

The grass boat kept fluttering, as if it wanted to rebel against the fate of being trapped, like a dehydrated fish, wanting its last breath.

Song Nian dragged Chu He's clothes and was dragged forward by Chu He.

Chu He's left hand long sword had been drawn, and his right hand was hidden in his sleeve, and he walked to the grass boat.

"Okay, let go, I'll see where this is sacred."

Song Nian curtly let go of Chu He's sleeves.

Under the moonlight, a few white lights flashed, and the grass boat suddenly disintegrated.

There was a bang, and bright red and sticky blood was sprinkled all over the ground.

Song Nian looked stunned.

She knows ......