"Drill, drill, drill!!!"
After another incense stick's worth of time, Yue Guan and Gui Mei had descended nearly two thousand meters underground. Their eyes were glazed, their faces pale and even tinged purple, their consciousness hazy. It couldn't be helped—they were Title Douluo, but they were still human. At two thousand meters underground, they truly could not hold on any longer. They were running out of oxygen.
Back in the Cangwu Desert, beneath the Dust-Sand Building Wood, Murong Huai had been able to descend fifteen hundred meters only because he had been enveloped in the Dust-Sand Building Wood's energy. Otherwise, he would have passed out long ago.
Just as the two were preparing to head back up, a stream of black liquid suddenly burst out before them. The next second...
BOOM!!!
Everyone on the surface immediately felt a tremor. Then, black viscous liquid erupted from the hole, along with two black—er, African immigrants!!
Gui Mei and Yue Guan were covered head to toe in black, viscous liquid, their faces utterly unrecognizable as they sat on the ground.
"Hahaha, just as I thought—oil!!"
The moment Murong Huai saw the gushing petroleum, joy surged through him. He leaped forward, raised a hand, and took out an empty storage Soul Tool, drawing all the spurting oil into it. Once the flow gradually slowed and stopped completely, Murong Huai ceased collecting it.
"Gui Mei, Yue Guan, Dugu Bo, from now on, you'll lead people in guarding this place. No one is allowed inside. Also, use Soul Power to seal the entrance."
"Yes, Holy Son."
The petroleum here was of exceptionally high quality, nearly viscous enough to draw into threads. It was an ideal oil-producing area.
After that, Murong Huai returned directly to Star Dome Valley and handed the stored oil to Mo Heng, instructing