Chu Kuangren had once visited the Soul Restricted Area.
During his time there, he learned a lot of new soul cultivation techniques, unlike before when he had a huge reserve of soul energy and did not know how to utilize them.
Currently, his proficiency in soul energy was far better than that of the Nether God. Hence, using the Abyss of Darkness against Chu Kuangren was the Nether God's mistake.
However, things were still proceeding according to Chu Kuangren's plans.
During their previous fight, he had let the Nether God go on purpose. It was because he wanted the Nether God's soul energy to get even stronger so that he could absorb all his soul energy at once.
"According to the intel from Long Shuijing, the Nine Kings can join forces and summon the manifestation of the Great Dao, making them immensely powerful. Since this will pose a threat to the Pan Gu Universe, I might as well get rid of one of its key pieces now," Chu Kuangren thought.