HSK 4
Háizimen zài yědì lǐ wán le yì zhěngtiān.
The children played in the open fields all day long.
HSK 7-9
Tā xǐhuan dúzì zài yědì lǐ túbù lǚxíng.
He enjoys hiking alone in the wilderness.
HSK 7-9
Chéngshì kuòzhāng shǐdé zhōuwéi de yědì yuèláiyuè shǎo.
Urban expansion has made the surrounding wilderness increasingly scarce.