Breaking through the Shell Barrier is an extremely perilous endeavor. Within the Mingcang Sect, when disciples undertake this task, they often have elders or mentors by their side for protection and guidance, lest a single misstep ruins their foundation.
Especially for disciples who have attained the upper three grades of Elixir Formation, reaching the Hua Dan Realm step by step is no easy feat. With such achievements, they must tread with utmost caution, as if walking on thin ice, and not make a single mistake.
Zhang Yan, having achieved the first grade of Elixir Formation, a rarity through the ages, had no prior experience to draw from on how to break through the Shell Barrier. Even Cave Heaven True Masters would likely be powerless to help and could only rely on his self-exploration.
Previously, in the Jingluo Academy, he had perused numerous books and records, many of which contained detailed explanations on how to break through the Shell Barrier.
