Hearing San Luoyang's words made Su Mei come to a clear realization. They were all given the freedom to decline because the top forces of the Aeternal Sky Starfield were not present in this recruitment. After learning about the overall structure of the starfield, one would be inclined to reach for the stars rather than the sky.
There were quite a few youths that were heavily disappointed after realizing that the forces present, those that sought to recruit them, were Silver-rank and Gold-rank forces. While this was still an outrageous leap from their previous starfield's current era, if one saw the top of the mountain, how could one settle for the climbing only halfway?