If that is what CX says, then I say, issue the ticket right away! We wouldn't want you to plan the trip and then be disappointed when the ticketing agent won't issue the ticket!

But I, too say that TPE-HKG-DEL-HKG-NRT-HKG... HKG-TPE is 6 sectors and you are definitely allowed only 4. And you are only allowed 2 stopovers in asia.. which is DEL and NRT I presume.