{
  "contentStorage": "postgres",
  "title": "Line 1 (Chengdu Metro) · Versions",
  "description": "Line 1 (Chengdu Metro) is a metro line, opened on 27 September 2010, 40.99 km long.",
  "url": "/en/concepts/chengdu-metro-line-1/versions.html",
  "entity": {
    "customFields": [
      {
        "key": "line_opened",
        "value": "27 September 2010"
      },
      {
        "key": "line_last_extension",
        "value": "18 March 2018"
      },
      {
        "key": "line_length",
        "value": "40.99 km"
      },
      {
        "key": "line_structure",
        "value": "underground"
      },
      {
        "key": "line_status",
        "value": "In operation"
      }
    ],
    "id": "concept_chengdu_metro_line_1",
    "type": "concept",
    "title": "Line 1 (Chengdu Metro)",
    "slug": "chengdu-metro-line-1",
    "aliases": [
      "成都地铁1号线"
    ],
    "summary": "Line 1 (Chengdu Metro) is a metro line, opened on 27 September 2010, 40.99 km long.",
    "status": "published",
    "categories": [
      "category-transit"
    ],
    "tags": [
      "tag-metro"
    ],
    "sources": [
      {
        "id": "cptond",
        "title": "CPTOND-2025 — Wang, Liang 等 (CC BY 4.0)",
        "url": "https://doi.org/10.6084/m9.figshare.29377427.v2",
        "locator": "Chengdu/chengdu_metro_routes.shp; DBF rows 12,22,27,28; status=1"
      },
      {
        "id": "wikidata",
        "title": "Wikidata Q6118988",
        "url": "https://www.wikidata.org/wiki/Q6118988"
      },
      {
        "id": "zhwiki",
        "title": "成都地铁1号线（维基百科）",
        "url": "https://zh.wikipedia.org/wiki/%E6%88%90%E9%83%BD%E5%9C%B0%E9%93%811%E5%8F%B7%E7%BA%BF",
        "locator": "信息框"
      }
    ],
    "createdAt": "2026-10-25",
    "updatedAt": "2026-10-25",
    "revision": 4,
    "body": "## Overview\n\nLine 1 (Chengdu Metro) is a metro line, opened on 27 September 2010[^wikidata], 40.99 km long[^wikidata].",
    "url": "/concepts/chengdu-metro-line-1.html",
    "lang": "en",
    "availableLangs": [
      "zh",
      "en"
    ],
    "conceptKind": "metro_line"
  },
  "entities": null,
  "versions": [
    {
      "revision": 4,
      "updatedAt": "2026-10-27",
      "message": "当前版本",
      "hasSnapshot": true,
      "url": "/en/concepts/chengdu-metro-line-1/at/4.html"
    }
  ],
  "lang": "en",
  "availableLangs": [
    "zh",
    "en"
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  "infoFields": [
    {
      "key": "concept_kind",
      "label": "Concept kind",
      "value": "Metro line"
    },
    {
      "key": "aliases",
      "label": "Aliases",
      "value": "成都地铁1号线"
    },
    {
      "key": "line_opened",
      "label": "Opened",
      "value": "27 September 2010"
    },
    {
      "key": "line_last_extension",
      "label": "Last extension",
      "value": "18 March 2018"
    },
    {
      "key": "line_length",
      "label": "Length",
      "value": "40.99 km"
    },
    {
      "key": "line_structure",
      "label": "Structure",
      "value": "underground"
    },
    {
      "key": "line_status",
      "label": "Status",
      "value": "In operation"
    }
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}