He took out the black powder he had collected earlier, and the system analysis interface lit up: [Main Component: Ferrous Sulfide (with Arsenic)]. It turned out that the Zhou family had been secretly refining poisonous sulfur!
The detonation point was chosen at an abandoned kiln far from the village. Lin Dahe followed the system's guidance, mixing Nitre with charcoal powder and creating a blasting tube with bamboo. Cui Xiaoman led her team to dig a trench fifty paces away as a shelter.
"Everyone step back!" Lin Dahe ignited the fuse and ran towards the trench. The sparks from the burning fuse crackled brightly in the darkness before dawn.
Three, two, one—
"Boom!"
The shockwave sent dirt raining down like raindrops. As the smoke cleared, a basin-sized crater appeared on the rock face. Just as everyone cheered, the Mute Blacksmith suddenly let out a hoarse roar and lunged at Lin Dahe, knocking him down.
"Whoosh!" A nail whizzed past their heads and embedded itself in a tree trunk behind them, its tail still wrapped in a burnt red string.
The One-Armed Veteran immediately led his men to surround the thicket, finding only a few scattered footprints and fallen nails—exactly the kind that Zhou Liangzhang had secretly stuffed into the rock crevices!
"Continue loading the explosives," Lin Dahe wiped the dirt from his face. "This time, bury them deeper."
By the third explosion, cracks resembling spider webs finally appeared on the rock face. The One-Armed Veteran swung his rock-breaking hammer with all his might, causing a large section of the wall to collapse with a thunderous roar, revealing a damp passage behind it.
"We're through!" Zhao Blacksmith's son was the first to crawl inside but quickly retreated. "The water is black!"
Lin Dahe peered in and saw water seeping from the crevice, bubbling with an eerie foam that smelled of decaying grease. The system's detection result was alarming: [Surfactant Contamination, Source: Soapberry Powder/Wheat Bran Mixture].
In a small pool where the Mad Old Woman used to sit, dead mayflies floated on the surface of the water. A spindle used by the old woman was stuck diagonally in the mud, as if pointing in a certain direction.
By midnight, Lin Dahe led two young men upstream along the waterway. The stench of decay grew stronger until they stopped at a concealed fork in the cave—dozens of empty burlap sacks were haphazardly piled up, with fresh red stamps from Zhou Ji Grain Shop still visible on their surfaces.
"It really is him..." Just as Lin Dahe bent down to inspect, he suddenly heard clattering sounds from afar.
They followed the noise to Zhou family's backyard, where Aunt Ma was directing servants to dump the last few bags of wheat bran into a well. Under the moonlight, those yellowish powders mixed with soapberry juice churned up disgusting bubbles in the well water.
"That should be enough for those lowlifes to drink!" Aunt Ma's laughter was sharp and thin. "The master said that when they come begging to sell their land, we’ll pressure them down to three dou of grain per mu!"
Hiding behind a pile of firewood, Lin Dahe clenched his fists as a new system prompt suddenly appeared: [Pollution Source Interception Plan: Activated Carbon Adsorption + Alum Precipitation]. Just as he was about to retreat, he heard a "crack" behind him—one of his companions had stepped on a twig!
"Who?!" Aunt Ma shouted sharply, and several torches immediately surrounded the firewood pile.
At that critical moment, urgent barking suddenly erupted from afar. Cui Xiaoman charged into the backyard with her fierce guard dog, which lunged directly at the servant holding a torch.
"The wild dog is crazy!" Aunt Ma screamed as she ran into the house. Seizing this opportunity, Lin Dahe led his team over the wall and escaped; behind them came the sound of shattering pottery—surely that woman had fallen again.
As they took a shortcut back to the construction site, dawn began to break in the east. Cui Xiaoman had a fresh scratch on her cheek but triumphantly waved a cloth bag. "Not only did we get sulfur, but we also got this!"
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