They had originally thought this was merely a Mortal World trial.
Any Cultivator who could make it inside had confidence in their own Dao Heart.
Other than those Sons of Heaven's Way whose fortune soared to the heavens, whose cultivation path had been smooth sailing and favorable winds all the way, and who had never suffered any great setback or hardship, virtually every cultivator would experience trials and tribulations.
Especially when breaking through in cultivation. At the Golden Core stage, there was a layer of Cause and Effect Tribulation; when breaking through to the Primordial Spirit stage, there was likewise a layer of Dao Heart Obstacle.
Not to mention that during certain minor breakthroughs, the Time-and-Lifespan Obstacle, Heart Demon Obstacle, Mortal Kinship Obstacle, and all manner of Heart Obstacles were like layers upon layers of intangible, ethereal shackles. They seemed shallow and elusive, yet they truly existed.
Only by shedding those shackles layer by layer could one ascend through the levels of the Immortal Path.
Even an Immortal Cultivator who placed little importance on tempering their Dao Heart would no longer possess the temperament of a child, pure yet far too fragile, as they had when they first began cultivating.
From Foundation Establishment to the Purple Mansion Realm, then from the Purple Mansion Realm across the Golden Core stage, cultivators had always understood the importance of refining the Dao Heart in the Mortal World.
Some concealed their names and identities, deliberately went into the mortal realm to dissolve all their cultivation, and willingly became ordinary mortals, changing identities hundreds of times.
Others entered secret realms like illusory worlds, like mirage towers hanging in the sky, experiencing one life after another as they flowed through Reincarnation.
Though their True Spirits remained in the world and it was not true Reincarnation like