POWER AND GRADES
There are two ways of getting stronger on this world
First, by cultivating.
humans get stronger by absorbing ether in the world.
there are two ways to cultivate, cultivate the body or the spirit
Their strength are based on the stage they are in.
Body cultivation has 7 stages (only 4 are known to mortals)
human (1-9)
high human(1-9)
earth (1-9)
sky (1-9)
heavenly (1-9)
celestial (1-9)
immortal (1-9)
Spirit cultivation has 7 stages
human (1-9)
opened mind (1-9)
profound (1-9)
enlightened (1-9)
heavenly (1-9)
celestial (1-9)
immortal (1-9)
Both path has prons and cons
body cultivators have strong body and strength but slower cultivation
while spirit cultivators high ether manipulation and mysterious arts they have weaker bodies.
The second way is to leveling humans in this world has two kinds of body those are capable of cultivating and those capable of leveling
like cultivation leveling has 7 stages
mortal (1-49)
human (50-99)
high human (100-149)
hero(150-199)
saint(200-249)
demi god (250-349)
immortal (350-499)
by leveling or cultivating living things such as animal or humans increase life span
each stage
1st 100
2nd 150
3rd 200
4th 250
5th 500
6th 1000
7th infinite
these is the reason why living beings power up, to be an immortal
GRADES
human (higher grade than a normal weapon)
spirit (these are uncommon because they are able to use ether or mana)
profound (rare, increases power of the user)
earth (very rare has great effects )
heavenly (more rare that earth grade because has 10 times power or effects than earth)
celestial (can cause a great war between realms)
immortal (only immortals are able to see this)
clan tier
mortal
high
heavenly
immortal
which was divided by lower,mid,high,peak grade
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CREATORS' THOUGHTS 
CraftyCat
CraftyCat author here
grades and stages will be more elaborate as the story goes
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thanks for reading!
Weekly Power Status
-- Power
Ranking 
-- Power
stone