Of the few dozen routes I did, this one was my favorite route in the Railey/Ton Sai area. It is a long route with the crux a few bolts from the top and a big pump factor. Nice stems to a stalactite up top stop the pump clock after the small holds-crux a bolt or two before reaching the anchor.
Go left from the hole in from the path from the Fire Wall that enters to the Melting Wall. Go left past 4 short low-angle routes and up onto a ledge at the base of the wall, then left past a single bolted line, Affenhitze. The next route left, and 3rd from the left end of the wall is Cross Eyed. The route climbs up and left through continuously steep rock to a bolted anchor below a set of huge stalactites. I recall that a long rope was required to get off of this route, as the top lowers off to low ground below the base of the route.