HSK V7-9
Correct

天长地久

/ tiāncháng dì jiǔ / 
Strokes

Definition

enduring while the world lasts (idiom)/eternal

Example

Definition

as long-lasting as the heaven and the earth—everlasting and unchanging

1
Yuàn
愿
wǒmen
我们
de
的
yǒuyì
友谊
tiānchángdìjiǔ
天长地久
  
。

May our friendship last forever.