The Cold Abyss Immortal Palace was left behind by a senior expert named the Immortal Lord of the Cold Abyss Immortal Palace tens of thousands of years ago. No one knows exactly how many years have passed since then. The Immortal Lord exerted a tremendous amount of magic power to seal the immortal palace in a spatial rift before disappearing. The Immortal Palace then appeared somewhere in the Northern Chill Immortal Palace every tens of thousands of years. There are countless treasures, including pills, cultivation techniques, and immortal tools. Every time the place is opened, all sorts of powers would fight over it. It could be said that the Cold Abyss Immortal Palace is the number one treasure in the Northern Chill Immortal Palace.
It is filled with traps and restrictions, making it very difficult to seize the treasures within. There are quite a number of people who would end up staying in the Immortal Palace forever if they were to just barge in without sufficient power. All of the treasures that they left behind have become a part of the treasures within the Immortal Palace as well. Furthermore, it's said that there were people who discovered that there was something else in the Immortal Palace when it was opened the last time.
The keys to enter the Immortal Palace are Deep Freeze Mountain River Scrolls and there were eight of them.