Pei Ye did not choose this for his first strike, because compared to the back, the front was still too easy to defend, not to mention the Dantian was where the True Qi Sea was located. The True Qi he had to break through was too thick. Moreover, all the sword techniques he could use from the front had been exposed before, but the "Pulling the Threads" Jade Tiger technique brought by True Qi had never been revealed.
But the Dantian indeed had a characteristic that the Bone Pivot did not.
It wasn't entirely made of Jiao Gold; it was a fusion of flesh and metal.
It was more precise and complex, and complexity far surpasses simplicity in approaching instability. Although Jiao Gold enveloped it, in the face of a heavy strike, perhaps one situation would arise: the Jiao Gold wasn't broken, but the Dantian was indeed injured.
