In episode 12 - Big Circle - Pak (Tzi Ma) has a contract on his head and heads into rural China to track down the people who want him dead. Except he doesn't really, all he does is head into the far end of the Clearwater Bay peninsula to a small fishing village called Po Toi O which stands in for a smuggler's port on the Mainland of China. Not to be confused with the island of Po Toi in the southern part of the territory (a name that will be familiar to John Le Carre fans).
Here's how the place looked back in the late 1980's.
And here is how it looks on the current Streetview release.