A thick layer of white crystals coated the ceramic wall of the old-fashioned urinal.
The crystals formed irregular, wavy patterns, their edges slightly yellowed and their luster dull.
"Advisor Li, are you really going to use this?" Gao Jiandong asked from behind, a speechless look on his face. "This... This is just too..."
Li Xu pulled on a pair of disposable gloves and took a small scraper from his pocket. "Director Gao, you must know how the Compendium of Materia Medica describes human urethra, right? 'Salty, cooling, and non-toxic. It treats consumptive lung heat, vomiting blood, nosebleeds, throat obstructions, gum disease, and mouth and tongue sores.' This is good stuff."
The scraper grazed gently across the ceramic wall, making a faint, rustling sound.
The crystalline sediment rustled down, and Li Xu carefully collected it on a piece of white paper he had prepared beforehand.
As he scraped, the faint smell of ammonia began to fill the air.
