摘要
Aba, Sichuan Along the southeastern fringe of the Qinghai-Tibet Plateau, in the northwest of Sichuan Province, is the Aba Tibetan-Qiang Autonomous Prefecture, which is home to spectacular and unique world natural heritage sites-the Jiuzhaigou Valley and Huanglong scenic and historic interest areas, as well as Siguniang (Four Maidens) Mountains and other scenic spots on