Changdao County
former county in Yantai, Shandong, China
Changdao County (simplified Chinese: 长岛县; traditional Chinese: 長島縣; pinyin: Chángdǎo Xiàn; lit. 'Long Island County') was a county in Yantai, a prefectural area of Shandong in the People's Republic of China. It consisted of the Changshan Islands within the Bohai Strait, directly north of Penglai. They are known for their sandy beaches and picturesque limestone cliffs. The total land area measured 56 square kilometers (22 sq mi) and the coastline 146 km (91 mi). The population in 2020 was 40,898. In 2020, Changdao County was merged into the county-level city of Penglai and became Penglai District.
Geography
The Changshan Islands (simplified Chinese: 长山列岛; traditional Chinese: 長山列島; pinyin: Chángshān lièdǎo), also known as the Temple Islands or Miaodao Archipelago (庙岛群岛; 廟島群島; Miàodǎo qúndǎo) are an archipelago of 32 islands located across the southern portion of the Bohai Strait, the waterway connecting the Bohai Sea to the Yellow Sea, collectively named after the two largest islands. In Chinese, they are also known as the "Long Islands" (长岛; 長島; Chángdǎo), and anciently as the "Sandy Gate Islands" (沙门岛; 沙門島; Shāmén dǎo).
The islands are located between Jiaodong and Liaodong Peninsula, at the confluence of the Yellow Sea and Bohai Sea.
The public source identifies “Changdao County” as former county in Yantai, Shandong, China. This brief keeps that definition visible, then builds a research path around Changdao, County and former.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Changdao County”, the useful work is to connect “former county in Yantai, Shandong, China” to the records capable of establishing context and consequence.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Aug 3, 2026. The linked authority identifier is Q1061949. VIAF identifies the subject as 137637449. The Library of Congress control number is nr00015959. Authority coordinates are 37.913, 120.700. 3 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Changdao County”, its source revision and the description used here.
- Expand the search: follow Changdao County primary sources, Changdao County archive and Changdao research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Changdao County”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Changdao County” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.