taken in a residential compound. the sign was by the entrance. For information, the Chinese on the top and bottom of the sign respectively are: "slow down your cars after entry"; "don't sound horn in the compound".
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Unfortunately, I didn't get a picture of this because I pulled up at traffic lights next to the van it was on then the lights changed before I could get my phone out to take a shot.
Anyway, the sign on the door of the van said -
Please do not steal my tools
I need them to pay your benefits