而立之年
ér​lì​zhī​nián

the age of thirty

  1. 而立 ér​lì
    thirty years old
    (literary) To be thirty years of age; originating from the 论语 lún​yǔ, where Confucius describes finding his place in society at thirty.
  2. 之 zhī particle
    [possessive]
    Connects a describing word or phrase to the noun it describes, similar to 的 de but used in formal or literary writing.
  3. 年 nián noun
    age
    a person's age or a specific stage in a person's life