It's fine, I've flown PEK-HKG during breakfast/lunch time.
Both F and J from PEK-HKG eats the same thing.
They serve you chicken with rice which I end up only eating the mushroom everytime.
The food was so bad that even the crappy chinese food we have in Houston was 10X better than what they served.
I ask the FA if there's anything else and they say unfortunately no.