A colleague of mine, every time he eats with him, he will say thank you to others, very polite. Usually when communicating, good at listening to others, will not go to show off their own, although his family is well off. He knows how to respect people and will not interrupt others. Even if you buy a bottle of water to say thank you to the vendor, unlike some people, no ability, but also love to show off, put their own qualities on the ground to rub hard.