There are a few persian breeders here, just google persian and exotic breeders Hong Kong and you will come up with a few. No guarantees on their ethics or quality though.
You will get many people coming on here and saying adopt a cat, and it is true there are plenty out there to adopt from the various agencies. However, I do also appreciate that bring a cat or dog into your family is as much about the personality and companionship as it is about any altruistic feelings.
And yes, you can get personality and companionship from strays, but I will say, in my experience, it is a much more hit and miss affair with strays. Certain breeds of cat have certain characteristics, looks aside, and unless I'm simply looking for a cat to keep a mouse population down or keep the birds from my rooftop, I would go for a specific breed. I have had many breeds over the years, and my particular favourite for personality would be an Abyssinian.
However, there are certain breeds of cats I would avoid and Persian is one of them. I find the breeding ethics worldwide for this breed to be questionable, and the development of the near vertical face, with its attendant internal structural issues to be almost bordering on abuse. I used to go to cat shows a lot, and over the last 30 years have found it depressing to hear the snuffly, grunty breathing.
Breeding of the various 'pedigree' cats is something I wholeheartedly support, specific selective breeding to accentuate certain characteristics to an extreme level to the detriment of the animal's health is not something I would ever support. These breeds have existed naturally for thousands of years in some cases and deserve to be allowed to continue as a distinct breed as much as an elephant does, and the breeding practices of the last 30 years have done a great deal of harm.
Anyway, rant over, there are a few small breeders here, you would have to visit and evaluate yourself as to whether you feel you will get a healthy pet.