Core Stone

The Core Stone is one of the Ten Regalia gathered by Wu Tianhun 2000 years before the current events of the novel. Xiao Feng states that its actually over 10000 years old, spending most of that time as a normal spirit before being found by Tianhun and being made into a Regalia by Tianhun's friend.

Xiao Feng also claims that Regalia used to be very common thousands of years ago, before catastrophic events caused the majority of the most powerful cultivators to die, and the natural energies to become erratic and kill off most of the spirits.

The Core Stone spent approximately 1000 years drifting in-between the planes of existence before finding its way back to the Tianhun Continent.

Plot
Xiao Feng was found by Bai Yunfei during the events of the 'Extreme King Pill' competition, which he orchestrated in order to find a new master. When Yunfei was battling Mo Ni, Xiao Feng was secretly rooting for Yunfei, as it would not have liked to have Mo Ni as its master, and it would have not given him permission to use it anyway if that happened.

Statistics
Core Stone as of Chapter 823
 * Unique Equipment
 * Equipment Grade: Mid Divine
 * Elemental Affinity: Space, Earth
 * Upgrade Level: +12
 * Equipment Effect 1: Create a pocket world a thousand kilometers in diameter identical to the real world.
 * Can freely manipulate the Laws of the pocket world.
 * Equipment Effect 2: Gain ability to sense spatial energy within fifty kilometers.
 * Equipment Effect 3: Gain ability to teleport anywhere within a perimeter of fifty kilomters:
 * Can teleport instantly if within a single kilometer
 * Charge up period of 1 second if distance is less than 5 kilometers.
 * Charge up period of 2 seconds if distance is less than 25 kilometers.
 * Charge up period of 3 seconds if distance is greater than 25 kilometers.
 * Cannot teleport if the surrounding spatial energy is disturbed.
 * Cooldown of 3 seconds.
 * Additional Attribute: Amplify Equipment Effect 1 by 15%, Equipment Effect 2 by 10%, and Equipment Effect 3 by 10%.
 * Soul Compatibility: 100%
 * +10 Additional Effect: Consume soulforce to send any target within ten meters into a sealed dimension for two seconds.
 * Target cannot attack and cannot be attacked.
 * Target maintains original visibility.
 * Cooldown of 1 minute.
 * +12 Additional Effect: Consume soulforce to increase the world elemental energy activity by 100% within the sensory range. Range size can be contolled.
 * Upgrade Requirement: 700 Soulpoints

Trivia

 * Xiao Feng has no gender due to spirits being born and residing in everything in the world; rocks, blades of grass, the trees, etc. Hence why 'it' doesn't have a distinctive shape or voice when interacting with Bai Yunfei.