Yes, Governor Xu has already roughly speculated why the Great Yu imperial court has changed its usual pattern and dared to raid the Northern Border; there must be some strong individuals and immortal sect support behind them, which is what gives them confidence.
In the current Divine Land World, the clashes between various forces are not solely between the forces themselves but also involve their supporters, resembling more of a prelude to a great war, a proxy conflict.
Forces without immortal sect and strong individual support are like rootless trees, unable to truly stand firm in the end. The Great Yu imperial court must have received support from immortal sects and strong individuals to dare to be so bold and ambitious.
