the flight to HKG might have been empty because of the new year's holiday which is this week. so maybe next week is also slow.
but indeed you can see that the saturday flight to HKG has changed... you can even get W seats , which was nowhere to be found in the past.

the market has changed dramatically !
last month i took the TLV-HKG flight, tuesday till sunday and had to pay 2200$, now you get indeed get T/V for half.