The next day, in the secret room.
A ray of colorful light focused on the white jade plate, forming a secret recipe:
The Blood Moon Gu.
It was a Rank Three Gu formed by the combined refinement of the Rank Two Moonlight Gu and the Blood Qi Gu.
Once activated, the moon blade turned completely blood-red and was the size of a washbasin. If it inflicted a wound, it had the effect of causing bleeding that would not stop.
"This is the one." Fang Yuan scanned the recipe up and down, committing it to memory. He closed his eyes to recall it silently, then opened them again to check it against the plate. After repeating this three or five times, he was certain he had memorized the entire recipe without a single error.
Compared to the three classics—the Golden Moon, the Frost Moon, and the Phantom Moon—this Blood Moon Gu appeared much more unorthodox.
The refinement recipes for the first three came with nearly a hundred thousand words of combined refinement insights and experiences. But the Blood Moon Gu recipe had less than a few thousand words.
This showed how few Gu Masters had chosen to refine the Blood Moon Gu throughout history.
Chapter 157