渤

渤海湾

bó hǎi wān

Bohai Bay

渤海

bó hǎi

Bohai Sea, between Liaoning and Shandong

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)