Yao Guang had entered Torch Dragon's seal before, but she had not known the seal's exact significance. Now that her understanding had risen, she could discern it in detail.
This seal had not been meant to stop this mountain peak from directly reviving into Torch Dragon. It had been meant to stop the resentful soul from escaping and trying to reconstruct a body for resurrection, the way Liusu had gathered a physical form.
There had probably been no seal at first. It was only later that they discovered Torch Dragon's divine soul had gone off to gather materials... How could they allow that? So they dragged it back and sealed it.
That was probably why Torch Dragon had an Innate Creation Bone and fragments of the gate in its possession, but no other treasures.
It had been laboring away, gathering materials and preparing for resurrection, only to be dragged back and sealed again. Torch Dragon's resentment had likely exploded in the end partly because of this. Who could endure that?!
Later, when it saw Liusu while in a rational state and realized that she was Yao Guang's true mortal enemy, it very readily gave Liusu the Innate Creation Bone and the gate fragments.
There was a passage through the mountain body, one formed over tens of thousands of years as the resentful soul tried to smash open the seal.
Come to think of it, it was rather pitiful.
In a sense, the seal had also served a positive purpose. The resentful soul had already effectively taken shape. If a resentful soul of this caliber truly escaped, with its savage ferocity that distinguished neither friend nor foe, this world would basically be finished.
Ten thousand years ago, Jiu Ying and the others had lured the great demons of the rift into