We had another one, too. A pedigree Persian.
Actually, DH got him before I came along.
This cat had been visiting a rural vet surgery in N. England, coming back to be fed as his coat and health grew worse and worse.
A vet nurse finally took him in.
His coat had to be shaved.
And when her landlord wouldn't let her keep him, she quite happily gave him to DH, who was living in that second floor flat.
He lived with us for years, happily, before developing cancer and having to be put down.
So people in Hong Kong or Japan or other densely populated areas shouldn't be allowed to keep cats?
Many keep tiny dogs, too. And don't walk them.