Marowak had sealed the tunnel entrance behind them with rock and Ground-type energy as soon as he crawled out, preventing enemies or wild Pokémon from pursuing them through the passage they had dug.
"Lunatone." Sorrel looked at the Lunatone floating beside him and instructed, "Sorry for the trouble, but find us a relatively safe area. We'll rest for a while first."
"Lunaa."
Lunatone's blue eyes lit up slightly as invisible psychic power spread from its body like ripples, extending in every direction.
That psychic power passed through rock walls, mine tunnels, and layer upon layer of stone. Using the information reflected back by the faint energy of mineral veins and crystals within the rock, it formed a three-dimensional map of the underground space in Lunatone's mind.
Watching Lunatone's blue-glowing eyes, Xia Shu could not help sighing. "Psychic-type Pokémon really are convenient. Scouting, reconnaissance, defense, offense—they can do everything."
Sorrel looked at Xia Shu's somewhat envious face, the corners of his mouth lifting into a faint smile.
"Then work hard." His voice carried the encouragement of an older brother. "According to the rules of our Pewter Gym, as long as you advance to a Gym-level Trainer, you can claim either a Lunatone or Solrock with two Egg Moves from the Gym for free."
"Don't worry, Senior Brother!" Xia Shu nodded vigorously and clenched his fists. Even the dust on his face could not hide his determination. "When the time comes, I'll choose a Lunatone. I'll become as strong as you, Senior Brother!"
Sorrel smiled and nodded, saying nothing more.
A few seconds later, the blue light in Lunatone's eyes slowly faded.
"Lunaa." It turned toward Sorrel and gave a soft cry, certainty flashing through its blue eyes.
"Did you find one?" Sorrel asked.
Lunatone nodded and drifted slightly deeper into the