Hong Tianbu clearly had some understanding of the Absolute Fairness Formation. After blocking Ling Han's attack, he simply didn't unleash any more powerful moves and simply allowed the battle to come to a deadlock.
That was because he knew that once the might of the formation disappeared, he would be able to fully recover his battle prowess. At that time, he would be able to easily suppress Ling Han.
Did he need to use his trump card?
Meanwhile, Ling Han had used all of his ultimate moves, but he was still unable to suppress Hong Tianjin.
One had to realize that Ling Han was also a prodigy who could battle against an opponent who had a superior advantage, which was being a major tier above him. Theoretically speaking, the others's battle prowess could still reach the Enlightenment Tier now, surpassing Ling Han's limit. If it weren't for the fact that his murderous aura was too powerful, he would have long since been defeated by Hong Tianbu several times.