Body realm (1~10 souls) 100 years

Yuan realm (10~100 souls) 300 years

Sheng realm (100~1,000 souls) 500 years

Shuang realm (1,000~10,000 souls) 1,000 years

Tian realm (10,000~100,000 souls) 5,000 years

Xian realm (100,000~1,000,000 souls) the realm where you generate immortal Qi 100 billion years

Sheng Xian realm (1,000,000~10,000,000 souls) 100 trillion years

Xian Tian realm (10,000,000~100,000,000 souls) half step immortality live forever through QI

Yung Shen realm (100,000,000~1,000,000,000 souls) immortality through body and soul

7 colors realm (1,000,000,000~100,000,000,000 souls) based on the 7 basic emotions true gods only 7 can exist at a time unless one dies there can't be a new one

Red~rage/anger

Purple~loathing/disgust

Pink~ecstasy/happiness

Black~terror/fear

Gray~grief/sadness

White~awe/astonishment

orange~contempt/neutral

(null~no emotions) can eat away others emotion through the use of souls

PS: the one in parenthesis is only for MC because he has Devil Seal