Well, I am a lawyer, so breaking any laws, not a good thing for me, professionally, not sure if the US would take any action on that sort of thing but not eager to find out. There is some sort of Facebook news group, could try them in Chinese as, basically, local Chinese person on Peng Chau is my ideal candidate. There are local cleaners who come daily to my block of flats, could hand over a letter in Chinese with my job ad. Also did e-mail some pet sitters and one service was willing to come to Peng Chau, that is basically my main issue- I live alone, not all that much housework to clean 466 square feet...
Probably going to take down my ad for a Legal PT helper as I am being inundated with requests from potential Sunday workers who wouldn't be able to do the cat sitting, which, like I said, is the main issue.
Should have started with the pet sitters but when I lived on Peng Chau 2011-2012, NO ONE was willing to come that far, for any price (willing to pay handsomely for travel time and ferry fare)- the times they have changed- I am amazed to see so many expats since I moved back to Peng Chau from the US- when I lived there was a tiny handful, if that. So I guess more people willing to provide expat-type services like pet sitting. My cats are psycho-shy so boarding them is NOT an option, they would completely freak out.
Anyway, thanks again to all for the advice, probably handing out Chinese language job ads probably best bet, next best hope that when I travel there will still be a pet sitter willing to come to Peng Chau, third option, pay a coworker (some still live at home) to flat sit while I travel- I have a beautiful sea view, super nice remodeled flat so not too hard to convince people to stay there.