The Mc thinking that old man is useless aha. His old sect teacher must've been a demigod of everything including knowledge and wisdom because he taught the MC things even fairies can't grasp lmao.

I'm not sure it's what his teacher taught him, I think it because of the god bloodline

Yea that's, that godly bloodline in him indeed the plot armor bloodline is most def the godly of all the bloodlines lol. It's like student pretends to learn from teacher, teacher learns from the master type ordeal here XD.