Doing business is just like that, so you need to be clear about the amount of money owed and when it should be paid, sometimes you can't be too nice, because if you're too nice then people will take your weak point and use it against you.
做生意就係噉㗎喇，數還數，路還路，有時唔可以太好人，因為你太好人嘅話人地就攞住你嘅弱點嚟打㗎喇。