天次 Traditional form: 天次 Pinyin (reading): tiāncì Definitions: number of days of sth taking place (e.g. days of heavy pollution) days occasions Characters: 天 - sky, heaven; god, celestial 次 - order, sequence; second, next; one after the other Traditional characters: 天 - sky, heaven; god, celestial 次 - order, sequence; second, next; one after the other