Regarding the cultivation in the Six Viscera Realm, because Chen Mu brought back many precious objects from the Da Xuan Dynasty Court Treasury, her foundational training in the Six Viscera Realm was quite perfected, comparable to that of an ordinary true inheritor.
Now, with various factors combined, plus the experience from four previous breakthroughs of the Mysterious Pass, after a difficult and awkward attempt, Xu Hongyu suddenly broke through the Body Barrier and proceeded to the gate of the Heart Gate.
The Heart Gate and Body Barrier are entirely different.
Xu Hongyu faced this barrier with great composure, breaking through effortlessly without much difficulty.