Knowledge: The number 13 is seen as a lucky number in China while it is seen as unlucky in England and Greece, where number 3 is considered the luckiest.

Conversation:
7 is my favorite number it means so much to me
Oh, so have you heard how various Hindus wrote that number in basically one stroke?
what other numbers bring good luck charm?

Response: Well, In China the number 13 is seen as a lucky number, and the number 3 is lucky in England and Greece.