When an artist copied a famous painting, he'd usually place a grid over the picture and then draw that grid on his on paper. He'd turn a complicated picture into relatively simpler little squares and had ensured that the copy could be as similar as possible. This craft was often called the grid method; some more traditional artists considered it beneath them to try, but pretty much all young people learned it.
As a new-generation artist with a regular family background, Sui Xiong had obviously learned the grid method and had gotten quite proficient with it too. So the moment he got those coordinates, it only took a quick visual sweep of the God's Kingdom for him to easily find the location they indicated.
To tell the truth, he had no idea what would be there, but he was willing to bet it was something really good.