"——" meaning in Chinese

{
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "punctuation mark"
      },
      "expansion": "——",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "punct",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chinese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Chinese punctuation marks",
          "parents": [
            "Punctuation marks",
            "Letters, symbols, and punctuation",
            "Symbols",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Chinese em dash (—). It occupies the space of two characters in the center of the line. It is called 破折號／破折号 (pòzhéhào)."
      ],
      "id": "en-——-zh-punct-HJwAuo6P",
      "links": [
        [
          "em dash",
          "em dash#English"
        ],
        [
          "—",
          "—#English"
        ],
        [
          "破折號",
          "破折號#Chinese"
        ],
        [
          "破折号",
          "破折号#Chinese"
        ]
      ],
      "raw_tags": [
        "punctuation"
      ]
    }
  ],
  "word": "——"
}

{
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "punctuation mark"
      },
      "expansion": "——",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "punct",
  "senses": [
    {
      "categories": [
        "Chinese entries with incorrect language header",
        "Chinese lemmas",
        "Chinese punctuation marks",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Chinese em dash (—). It occupies the space of two characters in the center of the line. It is called 破折號／破折号 (pòzhéhào)."
      ],
      "links": [
        [
          "em dash",
          "em dash#English"
        ],
        [
          "—",
          "—#English"
        ],
        [
          "破折號",
          "破折號#Chinese"
        ],
        [
          "破折号",
          "破折号#Chinese"
        ]
      ],
      "raw_tags": [
        "punctuation"
      ]
    }
  ],
  "word": "——"
}