Spring of Youth

Beelzebub Zofee brought Chen Zhao to a ring-shaped building with a hollow center. There were red crystals embedded in the wall, making it uneven.

When Chen Zhao looked up, he could see a huge red moon, shining with demonic red light. He'd never seen such a full red moon. When he came before, it had always been a new moon, waning or waxing gibbous moon.

Beelzebub Zofee stood before a furnace in the center. It shone with green flames. Then he started tossing the pearls in.

The flames in the furnace darkened from the original green. Chen Zhao had thought that Zofee would use the pearls as resources, but he ended up using it as fuel.

"The red moon of Hell only appears for three days the entire year, while the Spring of Youth can only be created during the red moon."

There was a duct above the furnace. Liquid started dripping down from it, landing in the stone bowl on the side. The liquid was as bright as blood, but it was a bit viscous.