Is There No Trash These Days?

After transmigrating to a fantasy world, Kang De obtains an amazing Teaching System – the trashier the students he grooms, the greater the rewards he obtains.
Understood, I’ll go recruit a bunch of trash as disciples!
Multiple years later, he was speechless at the prodigies before him.
“Master, after your guidance, I am now able to insta-kill the princes of my generation and I’m about to ascend the throne as the Female Empress!”
“Master, I’ve cultivated into the Fiend Supremacy among of all races!”
“Master, I’ve broken through my realm and turned into this generation’s Sword Saint…”
“Master, I’ve ascended the Pagoda of Truth and have obtained the title of the new Protector Deity.”
“…”
Looking at the Sword Saint, Protector Deity, Female Empress and Fiend Supremacy that he has personally groomed…
Kang De falls into deep thought… is there no trash these days?