The second level was made of Real Gods who comprehended a slight bit of Power of Heaven Way and also Universe Gods in the Third Heaven who had high comprehension power towards Power of Heaven Way and were extremely powerful.
In Sky Sword Prison, most of the cultivators were at the third or the fourth level. There were very few who were at the second level.
As for the first level… They were at the highest level in Sky Sword Prison, a bunch of experts who were on the top.
There were only four people in the bunch of people. The four of them were referred to as the Four Kings. They were the epitome of unrivaled.
According to Luo Meng's understanding of the Four Kings, they were all Real Gods that were extremely strong in power. They had extremely high comprehension power towards Power of Heaven Way. It was said that they had reached the level of the Doctrine Palace.
"Doctrine Palace?" Jian Wushuang was confused.