Traditional: 週年
周年 (zhōu nián) means “anniversary; annual”. It is an HSK 6 Chinese word (traditional 週年) in the HSK 3.0 vocabulary.
Practice each character:
今天是学校五十周年。
Jīntiān shì xuéxiào wǔshí zhōunián.
Today is the school's 50th anniversary.
Updated: 2026-05-27