Chu Ming stopped before the narrowing section.
At its narrowest point, it was roughly as wide as his shoulders. The ridge tips on both walls protruded inward like two rows of canine teeth growing toward each other, with just enough space between their points for him to pass sideways.
He adjusted his angle, aligning the plane of his shoulders with the fissure's longitudinal axis and turning roughly forty-five degrees, entering left shoulder first. As his shoulder passed through the narrowest point, the fabric of his clothes remained about a finger's breadth from the ridge tips on the left wall.
The ridge tips flickered faintly as he passed. Their dull silver-gray sheen turned clear and bright for roughly half a breath before dimming again, like metal briefly heated and then cooled. The transition between light and dark was smooth, without any abrupt jump.
When his right shoulder passed through the same position, the corresponding ridge tips on the right side flashed in the same manner.
Beyond the narrow section, the space within the fissure abruptly widened.
He stood within an irregular oval cavity.
The cavity measured roughly two zhang across and slightly over one zhang high. Its four walls consisted of the same gray-white law crystals, but their surfaces no longer bore longitudinal folds. Instead, hundreds of tiny law crystal protrusions were evenly distributed across them.
Each protrusion was a regular diamond shape, all with uniform side lengths, roughly the size of a fingernail, like ornaments deliberately set into the walls. The spacing between them was equal, arranged in a uniform array extending from the bottom of the walls to the top, covering the entire inner surface of the cavity without leaving an inch blank.
The diamond-shaped protrusions were all tilted at the same angle, each oriented around the cavity's center