“That’s lamp moss,” Wu Taohua explained. “It’s not exactly rare, but it only grows in certain places.”
“The Imperial Capital uses lamp moss to light the sewers,” Hou Jingshu said. “I’m told it’s to help sanitation workers clean.”
Wu Jian didn’t want to think about cleaning sewers, so he kept his eyes locked forward and his ears alert for any signs of danger. None had presented itself so far, however, and the cavern soon opened into a much larger space that looked almost like a room. More moss covered the ground and glowed far more brightly than in the tunnel. This allowed them to see the massive underground lake, which had numerous floating flowers gently swaying on the water’s surface.
“What a beautiful sight,” Wu Meiying sighed, hands to her cheeks.
“This place looks almost mystical,
