You can access the HiLink from the Mikrotik router behind the HiLink.
Problem is how to make the Mikrotik router to become the gateway for the HiLink (as it usually sends everything to the internet)
For the HiLink the connection should come from the Mikrotik, not from your computer.
Some possibilities:
-use the webproxy server on the Mikrotik. Then you can HTTP/HTTPS the HiLink by setting the Mikrotik as your proxy in your browser. The HTTP(S) session will come from the Mikrotik webproxy.
-if the HiLink allows for SSH or Telnet (not sure of that) then use the Telnet tool on the Mikrotik to connect to the HiLink.
-some proxy-arp setup could make the Mikrotik respond in the name of the HiLink (https://wiki.mikrotik.com/wiki/Manual:IP/ARP)
-HiLink modems don’t let you change the IP address. But you can make the HiLink accessable through a Mikrotik subnet IP address using dst-nat (similar setup is here: http://forum.mikrotik.com/t/port-to-interfacing/97096/1)