He never lacked teachers; what he lacked was the ability to use Spirit Skills.
Whether it's Little Fen Yang, or the Shadow Gu Tower that is about to fall into his hands, both must know the method to operate Spirit Skills.
Spirit Skill: Hollow Fire Cannon, this is actually pretty interesting, huh?
Not only can I throw it, but it can also blast away enemies who get too close—this suits my fighting style perfectly!
Now that I think about it, can I try not throwing it by hand, but instead use the Demon Soldier Bow to shoot out the Hollow Fire Cannon?
That would be awesome!
Wouldn't the Demon Soldier Bow basically become a rocket launcher then?
"Du Yu."
"What's up?"
Lin Shiwei lowered her voice, "Do you think there might be Spirit Masters existing even in modern society?
Just like what we saw earlier, are those Spirit Masters also surviving at the very bottom of the Bottomless Pit?"
Du Yu thought for a moment, silently, "I don't think so."
