As soon as they entered the core region, the surrounding rock walls took on a faint bluish-green glow. A barely perceptible, sickly-sweet smell crept into their lungs with every breath, and even the light suddenly dimmed. Only Yun Che's Curse Eye beneath his black blindfold could still clearly make out the way ahead.
"This poisonous miasma is even thicker than the Mine Foreman said. Take one of the Antidote Pills I gave you earlier. Don't let it get you."
Divine Martial tensed, and the little golden sun mark on his head lit up bit by bit around its edge. Faint golden light pushed the poisonous miasma back half an inch from Yun Che's body.
"I can only help block this little bit outside. If we really go deeper, even I won't be able to protect you."
Yun Che took out an Antidote Pill and swallowed it. A cool sensation immediately sank down his throat, instantly dispelling the heavy grogginess in his head. He nodded, pulled the Black Star Vein Map he had pilfered earlier from his Storage Ring, and checked their direction by the faint light of his Curse Eye.
"That's right. The place where the Mine Demon hid its treasures is behind that secret door up ahead. We're on the right path."
After they walked farther in for a little under an hour, a stone door covered in vines did indeed appear in the rock wall ahead. Faded, old patterns were carved into it, and it looked quite ancient.
Yun Che reached out and pulled aside the thick Poison Vines, revealing a fist-sized recess in the middle of the stone door. It was just large enough to hold the Core he had taken from the Mine Demon.
"Well, what a coincidence. So the key to this door is the