基金Supported by the Ministry of Science and Technology and Ministry of Education of China, the Key Project of Chinese Ministry of Education (No 306020), the National Natural Science Foundation of China under Grant Nos i0734040, 10734140 and 10674021, the National High-Tech ICF Committee in China and the Yin-He Super-Computer Center, Institute of Applied Physics and Mathematics, Beijing, China, and the National Basic Research Programme of China under Graut Nos 2006CB921408 and 2005CB724500.