Review Detail of Tiossi in Rise My Elementals!

Decent novel I guess(?). One thing I absolutely disliked is that the power advancement of MC is ABYSMALLY SLOW. Like really??? 600+ chapters in and he's still a 1 star mage??? like what he needs 1 million resources just to advance to 2 star??? while others just need like a thousand resource he need thousand times of that?? Author you need to change this man, MC's been consuming resources and still not advancing.