I suspect this has to do with the fact that all of the Chinese airlines use TravelSky as their GDS. TravelSky is native to the mainland and I don't believe any non mainland carriers use them. I think TravelSky is not updating or is in the process of updating all the other GDSes including Apollo.
Here is Sabre:
[KVS Availability Tool 5.1.2/Diamond - Sabre: Availability/GTC/US-CRPD1]
Code:
HKG Hong Kong Int'l HK [VHHH]
PVG Shanghai PuDong CN [ZSPD]
THU 29 Oct 2009
Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- -------- ---- -------- --- -- ------------
FM 810 HKG 13:05 PVG 15:30 767 0 I2 X2
FM 846 HKG 16:35 PVG 18:55 737 0 I2 X5
FM 812 HKG 18:40 PVG 20:55 737 0 I2 X5
FM 836 HKG 20:35 PVG 22:55 757 0 I2 X5