Someone was storming the mountain—a major event that hadn't happened for over thirty years. In the Heavenly Demon Clan, "storming the mountain" did not refer to an enemy attack but to a disciple's attempt to ascend the mountain to seek promotion.
Black-clad disciples could challenge the outer Clan, and outer Clan disciples could also challenge the inner Clan. However, to become a direct disciple beyond the inner Clan, mere challenges were not enough. Direct disciples could only be accepted into the Clan by the approval of a Heavenly Demon Clan elder.