渤

渤海

bó hǎi

Bohai Sea, between Liaoning and Shandong

渤海湾

bó hǎi wān

Bohai Bay

渤澥桑田

bó xiè sāng tián

lit. blue seas where once was mulberry fields (idiom, from 史記|史记[Shi3 ji4], Record of the Grand Historian); time brings great changes

环渤海湾地区

huán bó hǎi wān dì qū

Bohai Economic Rim (economic region including Beijing, Tianjin, Hebei, Liaoning and Shandong)