Heaven Crystal

The Heaven Crystal is a powerful object in Guardians of Night, serving as the series's plot device. It is a red crystal of great power that the Department of Night, Underworld and Sun wish to obtain.

History
The Heaven Crystal's appearance itself is a rare event that only occurred at most 5 times since the ancient times to the present day. The most recent recorded appearance of it was in 140 A.D in the Qiao County (present day Bozhou) during the Han Dynasty. At that time, the Heaven Crystal was formed and subsequently split into a larger piece and a smaller piece. The big piece was acquired by Cao Cao, who used its power to rise to power during the Three Kingdoms period. The small piece was acquired by Hua Tuo, who used its power to become the greatest physician during his time.

Formation
In the "Middle-Earth Reality", everything in the world gives off spiritual energy. With a small chance of happening, all the spiritual energy will start to converge into one place. The moment they all arrive at the destined location, there will be a small chance that the energy will start to compact together. After compacting together, there will be an even smaller chance that the energy will take a physical form. Since the physical form is similar to a crystal, it is called the Heaven Crystal. Due to the instability of all the spiritual energy in the world and the almost impossible formation process, the Heaven Crystal almost never appears. Even if the Heaven Crystal does form, it will scatter across the world as smaller pieces, usually around seven. When there's only one piece of the crystal, they will give off no energy and appear as a normal crystal. However, when another piece of the crystal is in close proximity and both pieces are not closed off from their surroundings, the two pieces will resonate by shining dimly or brightly depending on their distance, pull themselves together and fuse into one piece, giving off extraordinary energy.

Usage
When it is in fragments, the Heaven Crystal cannot be absorbed by any means. Only when all the pieces are fused into one can the crystal be absorbed. The person who obtains the completed crystal can have almost any of their wishes granted.

Story Relevance
The Heaven Crystal appeared around the time of the end of the Double Devils Arc and start of the Dong Guan Arc, approximately 2,000 years after its last appearance. The Department of Night sent out its guardians to find pieces of the crystal so they can obtain it for themselves, but so does the Underworld and the secret organization, Sun. Since the two Demon Lords joined the Department of Night and became guardians, Wang Shengli and Yan Wen came up with a point system for the guardians. The guardian with the most points when all the fragments are acquired will have the complete form of the Heaven Crystal. The secret organization, Sun, also wants to obtain the Heaven Crystal, but their plan is to let the Department of Night find all the fragments of the Heaven Crystal for them while slowly weakening the organization by killing some of its members off but leaving enough members to find the fragments. They also coded the Heaven Crystal fragments that have appeared thus far for easier recognition. Liu Damao, leader of Sun, split his Heaven Crystal fragment in half, disguised one half of it as a complete fragment, and gave it to the Department of Night to secretly monitor their collection and location of the other fragments.

Current Status
Total of 7 pieces, 4 pieces found.


 * Department of Night: 2 pieces. Crystal 1 obtained from Tianran Fei's heirloom. Crystal 2A obtained from one of the Double Devil's energy pellets. Crystal 3 obtained from Deng Yuankui as a reward and later given to the Underworld, currently in the possession of Yan Wen. Crystal 4A obtained from Liu Damao as a reward.
 * Sun: 1 half piece. Crystal 2B obtained by Gu Xiaohua from one of the Double Devil's energy pellets.
 * Underworld: 1 and a half pieces. Crystal 3 was obtained by Yan Wen from Wang Shengli as an excuse for power balancing. Later taken by Shi Ji and eventually returned to Department of Night. Currently regained by Yan Wen for the same purpose. Crystal 4B obtained after a series of events.