Xu Shu, clutching his books, slipped away to continue his studies; as for what Lord Pang De said about urgently studying the grand situation of the world, Xu Shu had basically no interest. This fellow came from a Humble Family, and the greatest hobby of a layabout is taking advantage. In Xu Shu's view, if he didn't understand the grand situation of the world, surely someone else would; anyone with a bit of ability could talk in circles.
Since anyone with a little weight could spin a complex tale, why should he bother? As for unique insights, aren't they just about the details? As long as you're on the right general path and you have enough strength, couldn't you just steamroll your way through? As for when the time came to meet with Lord Xuande and he needed to wax lyrical about the grand situation of the world, Xu Shu had already prepared his material.