For every Five Elements Thunder one condenses, one can practice a strand of Five Elements Thunder Qi within the five viscera.
When the five kinds of thunder gather, it signifies the Five Qi Towards Primordial."
Like the Taiping Dao Book, this Book of Five Thunder is also an Immortal Technique directly pointing to the Five Qi Towards Primordial.
However, the Taiping Dao Book is innately incomplete, and even after numerous repairs by later generations, it still has many defects and severe side effects.
This Book of Five Thunder, on the other hand, has been sorted out by generations of ancestors and has been perfected to the extreme. Not only is it without any defects, but it also has many wonderful uses, making the two incomparable to each other.