Correct

一马平川

/ yī mǎ píngchuān /
Strokes

Definition

flat land one could gallop straight across (idiom); wide expanse of flat country

Example

Definition

a wide expanse of flat land; a wide stretch of flat country

1
Yǎnqián
眼前
shì
píngchuān
一马平川
  

Before our eyes is a wide stretch of flat country.