(Third update)
Several hundred zhang beneath Heavenly Earth City lay an astonishingly vast cavern, several li across. Its ceiling was smooth and level, covered in black runes and formation patterns and studded with countless enormous spirit stone lamps that lit the entire cavern as brightly as day. Around its edges ran a circular trench several dozen zhang wide, so pitch-black that its bottom could not be seen. A raised stretch of level ground stood in the center, where nine times nine-eighty-one-pitch-black hexagonal stone spires formed an enormous circular formation. Profound black talisman markings and formation patterns covered the spires. At the formation's center stood a pitch-black platform several zhang across, inlaid with spirit stones that radiated dazzling light.
Seven or eight figures were standing in the middle of that platform, talking.
"Supreme Elder! Are you really going to the Great Illusion Continent?" Black Old Devil asked Black Skeleton with a frown.
"Alas! I have no choice! Would I need to do this if Li Xiaoya hadn't escaped?" Black Skeleton sighed and asked in return, looking utterly helpless.
"But the Super Teleportation Formation failed to complete the teleportation! Li Xiaoya and the others were most likely swallowed by teleportation space. There really is no need for you to take this risk, Supreme Elder!" Black Old Devil hurriedly urged.
"Hmph! If you hadn't let Li Xiaoya escape, would I have to brave this danger?" It would have been better not to mention it. The moment they did, Black Skeleton flew into a rage and berated them. "The Immortal Dao Chain is a minor matter compared to Li Xiaoya's aptitude! How did none of you notice? The very survival of our Heavenly Earth Demon Sect is at stake!"
"Uh... Supreme Elder! Whether that claim is true is still open to question, isn't it?"