There is a different world inside.
Han Dong, who was lying on the chilly ground, didn't sense any spirits of Mexican workers, nor did he get the slightest premonition of danger.
The light from his flashlight casted in a direction, unveiling a door emanating a yellow glow.
Countless charred corpses of Mexicans were grouped on both sides of the giant door, as if drawn by some sort of traction and were trying to enter it... Only, they seemed unqualified to do so.
Through contact with the door, even their souls seemed to have been obliterated.
"What is this!!"
Han Dong's shock was not due to the giant door hidden underground.
Nor was it because of these pitiful Mexican workers whose souls had been drained.
It was because a familiar symbol was imprinted on the surface of the door.
"Yellow Mark"
Yes!
It was indeed the special mark left by the Mysterious Yellow Robed Man on the back of Han Dong's left hand... currently imprinted on the surface of this underground door.