有这些区域可以选择
US: Los Angeles, California (DC3 CN2) [USCA_3]
US: Los Angeles, California (DC2 QNET) [USCA_2]
US: Los Angeles, California (DC4 MCOM) [USCA_4]
US: Los Angeles, California (DC8 ZNET) [USCA_8]
US: Fremont, California [USCA_FMT] (current)
US: New Jersey [USNJ]
US: New York [USNY_2]
EU: Amsterdam, Netherlands [EUNL_3]
