Speaking of Great Seal-type Magical Treasures, the most famous must be the Sky-Overturning Seal. Legend has it that... it was forged from the upper half of Mount Buzhou after Gonggong's head collided with it, causing the mountain to fracture and collapse. The Primordial Celestial Master gathered the upper part of the broken mountain to craft the Sky-Overturning Seal, which was later passed down to Guang Chengzi, making him the first Golden Immortal to strike the bell.
From this process, one can ascertain that no matter how strong the Sky-Overturning Seal is, it is after all just an Acquired Spiritual Treasure. What comes after cannot compare with what is innate, and that is a certainty. We can accurately say that the Sky-Overturning Seal may have immense destructive power, but it does not embody principles. When compared to Innate Spiritual Treasures, it is ultimately of a different caliber.