沿海 (yán hǎi) means “coastal”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
沿海城市经济比较发达。
Yánhǎi chéngshì jīngjì bǐjiào fādá.
Coastal cities have relatively developed economies.
Updated: 2026-05-27