Colour vision
I agree with some of the other replys you have and will be getting.
Going to CX is not the job it once was.
Stay away if you can, if you have a good job now, keep it.
You will be making beds and getting WX for years before you get an F/O seat, and then years more before you have the privelege of being beaten up and degraded by the CX checkers while moving to the left seat.
Get on any place else you can find a spot.
S/O pay in HKG will be very disappointing....
Sorry Mate...