Door

Zhang Heng moved his face a little closer to the ferns, but the strange smell around him did not become stronger. It seemed these weren't the ones emitting the putrid stench. The presence of these plants, however, made the air more humid. Coupled with the smell, it made for an even more uncomfortable experience.

Zhang Heng scraped off the ferns with a knife, put them in a sealed bag, and continued further down.

About ten steps later, a door appeared in front of him.

If those ferns could make anyone feel uncomfortable, then whatever that grew on the door could only be described as downright ugly. It looked like some kind of vine, and there were many small sarcomas on each of its nodes. Zhang Heng saw something that looked like a sucker on an octopus's tentacles at the bottom of the vine, firmly entangled with each other on the door.

Upon closer inspection, he saw the vines moving slowly.