Chinese CAD is not the rest of the world. They will not allow past 60. If it ever gets proposed, it will be met with a firm CAN NOT ! Too hard for them to think about or to contemplate. KA had a captain who accepted a right seat job to continue to fly past 60. China simply said CAN NOT. So he flew to KHH for the remainder of his contract. Nice job if you can get it. HKG-KHH-HKG. Bit boring for my liking.