Jiang Tang himself is a monstrous cultivator and does not need pills or anything of the sort to elevate to divine power, relying entirely on the abnormal cultivation technique of the Star-absorbing Spell.
During his trials, he exterminated many evil ones, refining the black energy that emanated from them into the spiritual power of his body.
He absorbed a great deal of demonic qi from countless criminals, enhancing his body without burden.
There are no such abnormalities in the world anymore, allowing him to ascend to godhood. Perhaps it was those wrongdoers who faced their demise. Their magic power delighted him in boosting his strength.
There are no other abnormalities in the world that might enhance strength like this. Perhaps others, when they engage in magic combat with demon cultivators, could only be harmed, or they harm each other. But they would never absorb the other's abilities during a battle.
