Men were different from women. If women feel weary, misery or wronged, they would find their sisters or close friends to pour out their ill feelings. However, men could only conceal all their weariness and bitterness, burying them deep within their hearts and move forward in life with a heavier load on their shoulders…
No one would know about what's within their hearts and none of them would wish someone could understand their feelings. What they only wished is that for every step they take, they have no misgivings nor qualms.
Ning Fan's heart was weighed down by weariness. This feeling of tiredness was actually the evil influence of the Heart's Devil before one attains the Divine Transformation Realm which was inducing him to let go of all responsibilities and return to become his mortal self, tempting him to give up all of his cultivation levels and weakening his state of mind to the point of falling apart.