This is a gigantic laboratory, filled with numerous instruments, where people in protective suits are busy in front of these machines.
Ji Ning couldn't understand what they were doing and didn't delve into it further, continuing to follow those who were extracting Netherworld Grass Leaves to a heavy machine.
They poured the Netherworld Grass Leaves from their tools into the machine's inlet and pressed the start button. The heavy machine began to emit a rustling water sound, similar to the sound from Bai Xiaotang's drum washing machine.
After about seven or eight minutes, dark green juice flowed out from a transparent tube beside the machine, into an inverted triangle container.
