HE has free peering with China Telecom, Unicom.. so China Telecom, Unicom will not treat the congestion to HE with any priority. Free peering = no service
Routing changes like that will not solve the problem; the attack will
just come in via transit and that's not good for any of the other
networks we would we shifting that burden onto.
Honestly, there's nothing we can do right now except pass the ball over
to China (Tele/Uni)com. We've done everything we reasonably can do to
mitigate the effects of the attack without causing undue harm to other
networks by routing the DDOS through them.