Once he had reached Grandmaster Greater Completion, Jiang Feng did not leave the clamshell. Instead, he decided to first stabilize and familiarize himself with his current power.
Since he knew that Qingqiu was alright, he had calmed down and was no longer in a rush of going down.
Not to mention that the earlier he went down, the earlier he would die.
Only when he had become powerful would he have the confidence to face the danger down there.
After he had stabilized his power at Grandmaster Greater Completion, he then continuously ate the remaining 21 Super Enhancing Pills to see if he could break through into the Abyssal Realm.
Unfortunately, even after spending another ten hours in the shell and eating another 16 Super Enhancing Pills, he was only able to increase his power to the peak of Grandmaster Greater Completion. He was only one step away from reaching the Abyssal Realm.