The old man threw a stone into the water, only to see that the stone had just touched the water surface, and immediately turned red, but it would make a "squeak" sound, disappeared, and there were several bubbles in the water.

"this red water is like sulfuric acid, even more poisonous than sulfuric acid." Then he turned and left.

Shangye also left and went into the house. They sat down. Shangye couldn't wait to ask, "master, what's going on? Why is there such a thing on grass? And this cloth, this... " Then he handed the black cloth to the master.

master took it, frowned and sighed deeply.

"this cloth...