As he traveled through the earth, in the beginning, within that three to five meter distance, there was nothing but soil, and Chen Hai discovered nothing else.
When he drilled down to five meters, however, he clearly saw that the amount of black mist emerging was gradually increasing.
He continued downward, and when he saw a withered corpse buried at this depth underground, he suddenly had a moment of realization.
"So that's it, no wonder black mist occasionally rises from the school gate of No.1 High School every evening..."
"The position of the dry corpse is at least six to seven meters deep under the ground, so even if the school gate is knocked down and rebuilt, it would never reach this depth."
"No wonder this matter has dragged on for so many years and has never been resolved; they could only seal the school gate temporarily!"
...
Having found the true source of the problem, Chen Hai finally breathed a sigh of relief.
