This is kind of old news (> a week old), but I didn't see any discussion here.
http://www.routesonline.com/news/29/...ration-in-s14/
Dragonair from 30MAR14 is adding new red-eye service on Hong Kong – Beijing route, on board 2-class Airbus A320. This service operates 4 times a week, which brings overall frequency to 53 weekly.
KA996 HKG2240 – 0155+1PEK 320 x246
KA997 PEK0250 – 0625HKG 320 x357
I wonder how many people would take the flight that arrives at Beijing at 2am. The other one is only slightly less insane.
Btw, this might be the shortest red-eye flight within the same time zone that I have ever seen.