Han Zu was a late Core Formation demonic cultivator that was breaking through to the Nascent Soul stage, He had chanced upon a secret realm where he had found a mausoleum of a dead cub of a Heavenly Nether Lion, he wanted to refine his bloodline into heavenly Nether lion bloodline which would allow his chances of reaching the Nascent Soul realm to increase.
He skimmed around the back trodden area of the continent only to find the invisible Moon tower submerged in the pearl lake.
The Moon tower was one of the outposts of an ancient extinct sect they were known to be stingy towers as there were many of them scattered around the continent but all of them were fruitless.
But this moon tower was unique cause it was still absorbing moonlight essence that helped it to remain invisible and the residual essence spread in lake water that produces moon pearls that were a bit dull thus the lake was called DimPearl Lake.
He had occupied Moon tower and barred himself in the basement; he was trying to use the moon essence to suppress the chaotic nature of Heavenly Bloodline and use it to refine his body and break into the Nascent soul stage in one go.
He had been cautious when planning his breakthrough he had even made two late foundation realm demonic puppets that could smell the living and had them patrol the tower in case an intruder disturbed his efforts.
He carved out an array with a life jade coffin as the eye of formation, everything was ready and he entered the formation with his weapon that he planned to refine as his soul weapon once he broke through to the next stage along with his cultivation manual and his space ring and started cultivating inside the coffin.
Soon 50 years passed and the lake that once produced the pearls had run out of pearls and the former obscure tower though still invisible from a distance was visible when one reached close enough.
Han Zu was at a critical time of his refinement of the Heavenly Lion Bloodline; he had been greedy instead of just refining the blood from the dead body he had devised a plan to get his second heart which would be his demonic heart so he had transplanted the Lions heart as his second heart, this would allow him to have a second life he was very pleased with his decision at first but now he was regretting it. He had never thought that the Lionheart would start resisting his body and even started to make his cultivation go haywire he was having very much difficulty and was in a very weak state he still cultivated the Demonic Second Heart manual to try to tame the Lion Heart.
It was one of his demonic techniques one of many such techniques that his precious manual held, Han Zu was an independent cultivator that had been lucky in his early days to join a Demonic Sect which was later destroyed during one of the righteous crusades by the Light Faction of Sects, He had snagged this manual and his spatial ring in the moment of chaos from a dead elder of this sect.
This had given him a foundation for his cultivation he worked as a gravedigger digging around tombs and mausoleums to gain riches, in one of these runs he had encountered the dead cub of a Heavenly Nether Lion.
At present, Han Zu was seething in rage at the fact that a mortal had actually wandered into the formation and had even disturbed his cultivation.