Zhoushan Islands in the context of "New areas"

Hangzhou Bay is a funnel-shaped inlet of the East China Sea on the middle eastern coast of Mainland China, bordered by the province of Zhejiang to the west and south, and the municipality of Shanghai to north. The bay extends westwards to its head at the city of Hangzhou, the provincial capital of Zhejiang, from which its name is derived. The east and southeast margin of Hangzhou Bay are marked by numerous islands off the shores of Ningbo, collectively called the Zhoushan Islands, which are an urbanized archipelago that forms the prefecture-level city of Zhoushan.

At Hangzhou, the Qiantang River flows into the bay, providing fresh water from the west, while seawater comes in from the east. Thus, Hangzhou Bay, especially its western end, is sometimes called the Qiantang River Estuary in the scientific literature.

Zhoushan Island is the principal and namesake island in the Zhoushan Islands, formerly romanized as the Chusan Islands, an archipelago administered by Zhoushan Prefecture in Zhejiang Province in the People's Republic of China. It is the province's largest island and 3rd-largest in mainland China after Hainan and Chongming. The island is the district seat of both Dinghai and Putuo. The island was the site of the first and second capture of Chusan during the First Opium War.

When referred to as a port, the Port of Zhoushan (舟山市) refers to the prefecture-level "city" consisting of Zhoushan island as well as the other nearby outlying islands, in Zhejiang. The former name of Zhoushan was Dinghai (Chinese: 定海). The Port of Zhoushan is a popular port for bulk carriers.