Item 4: Always good advice.
If you Have a Western education or mindset, don't be stupid and take a view "on principle" what is right or wrong. It's like being mugged a the dark alley the 200 pound guy with a gun in your face. It's wrong, and you can take a stand on principle but you will probably be dead. You hand over your wallet.
Handover the extra 500 or 1000 or whatever and forget about it. It's a small trade compared to police, triads, beatings, hospitals. Not to mention problems when this comes to the attention of your wife or SO.
Keep on Mongering