{
  "contentStorage": "postgres",
  "title": "Line 4 (Hangzhou Metro)",
  "description": "Line 4 (Hangzhou Metro) is a metro line, opened on 2 February 2015, 20.8 km long, with 33 stations.",
  "url": "/en/concepts/hangzhou-metro-line-4.html",
  "entity": {
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      {
        "key": "line_opened",
        "value": "2 February 2015"
      },
      {
        "key": "line_last_extension",
        "value": "21 February 2022"
      },
      {
        "key": "line_length",
        "value": "20.8 km"
      },
      {
        "key": "line_stations",
        "value": "33"
      },
      {
        "key": "line_structure",
        "value": "underground"
      },
      {
        "key": "line_status",
        "value": "In operation"
      }
    ],
    "id": "concept_hangzhou_metro_line_4",
    "type": "concept",
    "title": "Line 4 (Hangzhou Metro)",
    "slug": "hangzhou-metro-line-4",
    "aliases": [
      "杭州地铁4号线"
    ],
    "summary": "Line 4 (Hangzhou Metro) is a metro line, opened on 2 February 2015, 20.8 km long, with 33 stations.",
    "status": "published",
    "categories": [
      "category-transit"
    ],
    "tags": [
      "tag-metro"
    ],
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      {
        "id": "cptond",
        "title": "CPTOND-2025 — Wang, Liang 等 (CC BY 4.0)",
        "url": "https://doi.org/10.6084/m9.figshare.29377427.v2",
        "locator": "Hangzhou/hangzhou_metro_routes.shp; DBF rows 12,33; status=1"
      },
      {
        "id": "wikidata",
        "title": "Wikidata Q11102444",
        "url": "https://www.wikidata.org/wiki/Q11102444"
      },
      {
        "id": "zhwiki",
        "title": "杭州地铁4号线（维基百科）",
        "url": "https://zh.wikipedia.org/wiki/%E6%9D%AD%E5%B7%9E%E5%9C%B0%E9%93%814%E5%8F%B7%E7%BA%BF",
        "locator": "信息框"
      }
    ],
    "createdAt": "2026-10-25",
    "updatedAt": "2026-10-25",
    "revision": 3,
    "body": "## Overview\n\nLine 4 (Hangzhou Metro) is a metro line, opened on 2 February 2015[^zhwiki], 20.8 km long[^wikidata], with 33 stations[^zhwiki].",
    "url": "/concepts/hangzhou-metro-line-4.html",
    "lang": "en",
    "availableLangs": [
      "zh",
      "en"
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      "slug": "metro",
      "name": "地铁",
      "description": "中国城市地铁线路、车站与运营机构。",
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      "fromUrl": "/en/organizations/hangzhou-subway.html",
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    },
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      "fromTitle": "杭州市",
      "fromUrl": "/en/places/hangzhou.html",
      "fromType": "place"
    },
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      "fromId": "place_hangzhou_chengxinglu",
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      "fromUrl": "/en/places/hangzhou-chengxinglu.html",
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    },
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    },
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    },
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      "fromId": "place_hangzhou_hangxinglu",
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      "updatedAt": "2026-10-27",
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  ],
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}