bó | same as 渤海 , Bohai Sea between Liaoning and Shandong/Gulf of Zhili or Chihli |
渤 | same as 渤海 |
渤海 | Bohai sea between Liaoning and Shandong Parhae, Korean kingdom in Manchuria and Siberia 698-926 |
渤海湾 | Bohai Bay |
渤澥桑田 | lit. blue seas where once was mulberry fields (idiom, from 史記|史记 |