"I've got a Big Digga, and I dig, dig, dig." Working the steering wheel, Cheng Mingrui couldn't help singing happily.
"I planted a patch of little mushrooms, and I'm waiting for 'em to grow." He stomped hard on a control, opening the feed pipe and coating the Big Digga's gears with Ork mushrooms.
The mushrooms were quickly crushed and smeared along the excavated tunnel. Gork and Mork had told Cheng Mingrui to dig downward, but digging alone certainly wasn't worth it. He might as well plant more mushrooms. The more boyz he had, the safer Cheng Mingrui felt.
"Gork and Mork told me to dig down, so let's see what's down there!" Carried away by his singing, Cheng Mingrui suddenly felt a jolt, as though he had struck something.
With the Big Digga's power, was there really anything underground that could stop its advance? Cheng Mingrui had been digging downward all this time and had never encountered anything like that. Even the hardest strata had only slowed the Big Digga down.
He stopped the machine and called the boyz down to dig out the surrounding area and see what lay ahead.
Soon, thanks to the boyz' efforts, the earth ahead was cleared away, revealing a hard black wall before Cheng Mingrui.
No way! No way!! Cheng Mingrui touched the black material before him, his emotions churning violently. Hadn't Gork and Mork told him to dig down? Why had this thing appeared? Was this something his current Ork tribe could afford to mess with?
Clinging to a shred of hope, he switched on a large lamp and swept its light across the black wall. If there were no identifying markings, perhaps it was just an abandoned slab of obsidian.
As the beam climbed, a symbol made up of a circle and