Returning back to the time before Earth gained Qi

Cultivation levels

Qi refining stage: There are 12 levels in this stage but only nine are known to public.

Foundation Establishment stage: There are 9 levels

Core formation stage: There are 9 levels

Golden Core stage: There are 9 levels

Nascent Soul Stage: There are 9 levels

Soul Formation Stage: There are 9 levels

The later stages will be updated as we go into the novel.

Physique Grades: 

Mortal Grade (1 in 10,000)

Earth grade (1 in a million)

Sky grade (1 in a hundred million)

Heavenly grade (1 in a 10 billion)

Immortal grade (1 in a trillion) 

Note: These are under normal circumstances but due to the Earth having only 8 billion population it is modified that 8 people on earth can have immortal grade physique

Item Grades: 

1st grade (low, medium, high, and top) 

2nd grade (low, medium, high, and top) 

3rd grade (low, medium, high, and top) 

4th grade (low, medium, high, and top) 

5th grade (low, medium, high, and top) 

6th grade (low, medium, high, and top) 

7th grade (low, medium, high, and top) 

The remaining will be updated as we go into the story