It was precisely because of the rarity of mysterious heavenly rank spirit treasures that the Institute of martial arts was greedy when they first found out that song qingxiao had a treasure that could transform.
It was rumored that the divine armaments clan had found the technique to create mysterious heaven-tier treasures, but that was just a rumor. Even after the divine armaments clan was exterminated, the Institute of martial arts had not found any records of it.
The armament families focused on refining magic weapons. Elder Chun was the most talented among them. For hundreds of years, he had been famous in the human realm upon heavens. However, his highest achievement was only a Supreme spiritual treasure.
The chances of reaching the profound heaven spiritual treasure stage and transforming the treasure into a physical form were too low.
Even a Grandmaster blacksmith could not achieve it in their entire lives, but song qingxiao said that she had.