The Heavenly Cave was located at the deepest part of these numerous mountains and it was considered as the forbidden grounds of the Celestial Demon Marten tribe. Only those who held a high status in the tribe, were qualified to enter and train. However, over the years, the tribe had consistently lost contact with many peak experts who had went inside to enter a cultivation seclusion. Moreover, only after the tribe members combed the place, did they discover their remaining skeletons. This was likely because they had failed while they were trying to make a breakthrough.
It was precisely because of this that ordinary tribe members were forbidden from entering the Heavenly Cave. As such, the Elders Council must give their approval before one could enter.
However, it was obvious that Lin Dong could not use this method to enter the cave.
