Chapter 436
There had been many reasons why Wei Jun had been able to resist the effects of mana and the spells. First of all was his strong body. His natural stats were so high that there was no need for him to empower himself with Qi. Of course, a bare body against any supernatural power would be at a disadvantage, which would have been a problem had Wei Jun not also possessed his class, which healed him continuously.
The second point was his Qi. The nature of his Qi was destruction, decay and nullification. The sole purpose of death was to end everything and as soon as any power came in contact with Wei Jun's Qi which was made of death, their effect would greatly diminish so when mana or Qi of another person came in contact with Wei Jun's Qi, they lost a significant power, or were outright canceled if they belonged to lower level powers.