AS the sun sets over the South China Sea, the city of Sanya is preparing to step into a spotlight that extends far beyond the boundaries of a traditional sporting arena. On April 22, this tropical hub will welcome nearly 1,800 athletes for the sixth Asian Beach Games. While the world often focuses on the high-stakes drama of the Summer Olympics or the geopolitical maneuvering of global summits, there is a quieter, perhaps more significant shift occurring on the sands