三十年河东，三十年河西
sān​shí​nián​hé​dōng​sān​shí​nián​hé​xī

change is the only constant

  1. 三十 sān​shí numeral
    thirty
    thirty; 30
  2. 年 nián noun
    year
    a year or the duration of a year; also used to describe annual or yearly occurrences
  3. 河东 河東 hé​dōng
    Hedong
    A historical region east of the Yellow River in southwestern Shanxi province, formerly organized as a commandery (during the Qin and Han), circuit (唐 táng), or route (宋 sòng)
  4. ， sān
    non-Chinese
  5. 三十 sān​shí numeral
    thirty
    thirty; 30
  6. 年 nián noun
    year
    a year or the duration of a year; also used to describe annual or yearly occurrences
  7. 河西 hé​xī
    Hexi
    The region west of the Yellow River, including parts of Shaanxi, Gansu, Qinghai, and Ningxia; also known as 河右 hé​yòu in historical texts