Three days later, in the refining room.
Over these three days and nights, Li Yao didn't sleep a wink. His eyes were almost blood-red, his hair was disheveled, and incoherent mumblings could be heard coming from his mouth.
A silver-white metal ring was wrapped around his forehead, engraved upon which were a few dozen freezing array glyphs. Whenever his body temperature shot higher than 40 degrees, it would automatically start operating, releasing a cold stream of air which would keep his brain temperature lower than 38 degrees.
"Whish! Whish!"
From the metal ring, a cold stream of air was constantly released, forming a faint layer of mist around Li Yao's forehead. It made him look almost like an extremely mysterious immortal.
Licking his dry lips, Li Yao inputted over a thousand blueprints and spiritual energy flow diagrams into the command crystal processor of the crafting furnace.
[1] The level of scales is huge>small>micro/mini>nano. That’s the general outline of sizes. Nano scale still hasn't been introduced and I highly doubt it will be in near future, but just to make things clear, I have introduced it to you.