The Abyss Firmament held many aspects, elements and other things to completely comprehend. Tang Yin would also need to alter and use the abilities of the Abyss Firmament to his advantage. All of this would be left for the future, once he had enough time to do things to his heart's content.
For now, Tang Yin stored everything within his storage ring inside the Abyss Firmament. Nobody could enter the Abyss Firmament without his approval or permission, not even a Law Creation Realm cultivator. Therefore, Tang Yin was not at all worried about leaving his valuables in the Abyss Firmament.
Then he left the Abyss Firmament. He would return later.
Tang Yin instantly appeared above the south zone's sea. It was as if reality had decided to reinsert Tang Yin back into its record, bringing him back into existence.
Tang Yin had only spent around 2 minutes inside the Abyss Firmament, the same amount of time had passed in the outside world.