At first, Jian Wushuang felt it was odd that he was able to completely absorb 37 Purple Heaven Thunderbolts, but he quickly realized why.
Purple Heaven Thunderbolts were used for building up and strengthening the body.
However, Jian Wushuang cultivated the Heavenly Creation Skill and was already a Venerable Master. Right now, the biggest difference between Jian Wushuang and normal warriors was his body.
This wasn't in reference to his physical strength. Instead, it was his body's foundation!
After he broke through to the level of Venerable Master, his body continued to strengthen, gaining unlimited possibilities.
How much a body could be strengthened and how many Purple Heaven Thunderbolts it could absorb, depended on the body's foundation and the warrior's endurance. Obviously, Jian Wushuang was able to bear much more than those lords.