HSK 6 HSK V7-9
Correct

日新月异

/ rìxīn yuè yì / 
Strokes

Definition

daily renewal, monthly change (idiom)/every day sees new developments/rapid progress

Example

Definition

change for the better day by day, and month by month—change rapidly

1
Shìjiè
世界
xíngshì
形势
rìxīnyuèyì
日新月异
  
。

The world changes every day.