As for the reason, it's quite simple.
Jealousy!
Because the Taicang State has become the most respected among the other six states.
However, it wasn't because Taicang State was the first to achieve a great victory in Central Earth.
Every state poured their efforts into the ancient giant wars, sacrificing countless brave souls, and they all were proud of their respective states.
In this aspect, there is no clear winner or loser, nor should there be.
But, the powerhouses of Taicang State in the Divinity Transformation Realm, following Jiang Fan as he crossed into the Heavenly Realm, descended like divine weapons into the independent Returning Ruins State, exterminated the half-giants, and killed the Compassionate Sage.
These awe-inspiring feats indeed commanded the respect of the powerhouses from various states!
The chaos caused by the half-giants, bringing Central Earth to the brink of destruction, and how that old dog Compassion aided their tyranny was witnessed by all.
