手机翻墙软件测试
回国之前，在手机上下了几个“翻墙”软件，到国内后一一测试，都能用。
Opera VPN :
https://play.google.com/store/apps/details?id=com.opera.vpn&hl=en
Psiphone :
https://play.google.com/store/apps/details?id=com.psiphon3.subscription&hl=en
FreeBrowser:
https://play.google.com/store/apps/details?id=org.greatfire.freebrowser&hl=en
OneKey VPN:
https://play.google.com/store/apps/details?id=com.golden.freegate&hl=en
个人感觉最好用的，是 Opera VPN
