How To Null Route China?

I use geoip so that if ($country="CN") { die(); }

This works on my site. But for some reason I still get the occasional IP's through.

I looked at my Lighttpd server-status and I have 600 connections from 3 different IPs that come from China.

I typically use ./route add -host 222.221.81.3 reject as the way to block them, but it changes from time to time. The Chinese are using 90mbps of bandwidth and I want it to stop as they must be directly hotlinking my content.

How to null route large blocks from China? Please note I want to keep Hong Kong, Macau and Taiwan.