虛歲

1. • one's age, according to the traditional Chinese method of reckoning (i.e. the number of Chinese calendar years in which one has lived) – In this system, a person's age at birth is one, and increases by one at the beginning of the first solar term 立春 lìchūn each year, rather than on one's birthday.
2. • contrasted with 实岁 shísuì

Character by character

• 虛(xū)emptiness
• 歲(suì)classifier for years