This is not in any way meant to be an insult to HK born Chinese pilots, but there are no Hong Kong born Chinese flying for Japan Airlines mainline. All pilots on the mainline seniority list are Japanese born nationals, with the exception of about 10 remaining North American Captains. Even they may have retired by now. JAL mainline, currently, has a strict policy of no foreigners. This could change in the near future,
Jalways is a different story however. Several different nationalities.
Cheers