Capítulo 687: First War Room Briefing - Part 1

Cultivating within his cultivation stance had resulted in Jin feeling more refreshed than ever, and to his surprise, he discovered the black sludge had taken on a new form.

A very fortunate discovery since he had forgotten about the side effects and had been cultivating in his bedroom. (Though technically, his entire house was controlled by the System which could remove the sludge as easily as it did in the Dungeon Maker room.)

Instead of the sludge floating around and above him, he found crystals strewn around near his feet. Obviously, Jin did not poop out crystals while he was cultivating but instead, the floating black sludge slowly solidified into 30 cm crystals before they dropped out of the 'atmosphere' and fell all around Jin.