Yes, it's legal, but that doesn't make it right: Hong Kong's 'can do' spirit has been twisted

Yes, it's legal, but that doesn't make it right: Hong Kong's 'can do' spirit has been twisted
- : you're in a supermarket, waiting in the checkout queue to pay for only one item. The shopper in front with a big load of groceries sees this and offers to let you go first. You didn't even think to ask, but this thoughtful person put your needs first with nothing to gain. Why do some people do it?