Chinese 幸福 XìngfúA state of prolonged sense of happiness.

幸福 is different from 'happiness' - 快乐. 幸福 is a tier above 快乐 in terms of positive associations as it is not as temporary. This is why when you congratulate someone on their birthdays you say 生日快乐 (happy birthday) , as it is temporary, but 祝你们幸福 (wish you two 幸福) at weddings.