The Nation: On the ridgeline above this stands the other vision: four tall wind turbines face the South China Sea, receiving the steady ocean breeze. The turbines of the Da Mei Sha wind farm are part of the country’s rapidly rising renewable energy sector. This small wind farm represents an alternate future: that of China as a green technology giant. The People’s Republic of China faces two problems that could be addressed with one solution. The global economic crisis has hit China hard. …