Two things about your Windows ipconfig.
1) If your VirtualBox IP address actually is 192.168.1.77, then the VirtualBox Gateway setting is wrong. It currently is 22.214.171.124, but should be 192.168.1.1.
2) If you are going through a proxy, then it makes sense that both your PPP IP address and Gateway address are the same (126.96.36.199).
1)You are right,it is a mistype yesterday before I went to bed.originally,I do some settings with my NIC
to visit 192.168.1.1 in order to do my ADSL modem setting,nothing important! and then I wanted to undo
these changes,but I did a mistake with the virtualbox's NIC,and I do not know how it is set before,so I tinkered it as above shown.but it is important that all test results are made BEFORE this accident.
2)The proxy I used is an online proxy,You could try it: http://polysolve.com/
As an online proxy,I need not do tinker with my computer to use it,so the IP address is my real IP.
At least,I think so,is it right pal?