I have got a comment saying that I didn't explain how the cultivation powers truly worked, I thought that people who read these kinds of novels should know this by now but since there might be newbies here and there who don't know how these powers work I will make this brief chapter in volume 0 to tell you how it works
Earthly realm: the body is as strong as rocks, easily able to break normal humans bones if enough force is applied, an earthly realm 1st stage practitioner is as strong as 20 adult men regardless of age or sex, 9th stage makes him as strong as 200 adult men combined, his strength can pierce through rocks and based on a technique he can cut through a waterfall and stop it, earthly realm practitioners can use their inner vigor to ignite flames, they are quite weak but it's their only way to deal with supernatural opponents.
Heavenly realm: In this realm, the practitioner focuses on refining his soul, the strength increase is not big but the body of the practitioner is still a bit stronger than normal earthly realm experts, the big increase is the ability to fight with your soul, you can easily create weapons with your soul willpower and destroy the opponent's soul, that's why an earthly realm practitioner would have a very hard time fighting a heavenly realm one unless they have an abnormally strong soul or a treasure to protect it.
Ki Cultivating realm: In this realm, the practitioner strength takes another soar, the ki that's cultivated through the whole body of the expert strengthens his ki circulatory pathways making him able to exude a lot of ki, unlike the previous realms, in this realm they can easily use things like giant fireballs, lightning and ice depending on the attribute they cultivate, they can also cloak themselves in their ki to increase their physical strength, at the 9th stage a ki cultivating realm practitioner can destroy a small mountain if he exhausts all of his ki.
King Realm: The Realm of Kings, in this realm the practitioner gets to create a crown of ki that fuses with his soul enhancing both of his physical and soul abilities, depending on the innate talent of the practitioner, he might gain 9 abilities that would form themselves as jewels on the crown, these abilities can range from being able to destroy mountains easily, to be able to eliminate souls stealthily, being innate abilities they grow along with the user, the abilities also evolve once the practitioner reaches the Emperor realm, the strength of the practitioner in this realm can be explained very simply as it's based on the abilities that he unlocked, most of the time the bodily strength remains the same in the same stages unless they practiced body refining, so a King Realm expert at the 9th stage could easily corrode a weak planet to the point Magma would flush out of the core and flood it.
Emperor Realm: In the Emperor Realm, the fighting ability of the practitioner reaches a level that they can throw and fight using smaller celestial beings using their special abilities, their ability increases accordingly with the stage they are at, unlocking multiple new abilities just like the King Realm and its jewels.
Sage Realm: In the sage realm the power of the expert increases a lot compared to the former cultivation realm, the sage realm can be considered the realm where one's foundations that they laid in the previous realms bloom and activate all of the other preparations they had done, this is further shown by the quality of the avatar one got, at the peak strength of a sage, they can rend through space, teleport from planet to planet without the use of formations and even destroy upper ranked planets if they wish so.
God Realm: This is the peak of cultivation and the strongest a cultivator can become in the mortal realm, here they achieve bodily immortality making themselves extremely hard to kill by linking the laws of the universe with their bodies, powers can vary depending on the cultivation and experience of the God Realm expert but mostly they can easily destroy planets and destroy or lock space in a big area, while they can't destroy the universe they can damage it if they want to.
True Realm: Unlimited power, pretty much omnipotence, and omnipresence.
New explanations will be added when MC reaches those realms.