This chapter how the power system correlates so you guys don't get confused.
Low class=Body refining
Middle class=Mana/qi circulation
High class=Foundation establishment
Ultimate class=Gold core
Super class=Nascent soul
Leader Class=Spiritual palace realm
God Class=Unity Realm
The heavenly tribulation realm and Emperor realm are their own class, I have plans for this fan fic and power systems I don't want to spoil anything but It will be explained later on in the story.