"Tứ bất tử" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四不死",
        "2": ""
      },
      "expansion": "Sino-Vietnamese word from 四不死",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四不死.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "proper noun",
        "head": "",
        "tr": ""
      },
      "expansion": "Tứ bất tử",
      "name": "head"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Mythological figures",
          "orig": "vi:Mythological figures",
          "parents": [
            "Mythology",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The Four Immortals"
      ],
      "id": "en-Tứ_bất_tử-vi-name-B0dlb3T0"
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ ʔɓət̚˧˦ tɨ˧˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ ʔɓək̚˦˧˥ tɨ˧˨]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ ʔɓək̚˦˥ tɨ˨˩˦]",
      "note": "Saigon"
    }
  ],
  "word": "Tứ bất tử"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "四不死",
        "2": ""
      },
      "expansion": "Sino-Vietnamese word from 四不死",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 四不死.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "proper noun",
        "head": "",
        "tr": ""
      },
      "expansion": "Tứ bất tử",
      "name": "head"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Sino-Vietnamese words",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese proper nouns",
        "Vietnamese terms with IPA pronunciation",
        "vi:Mythological figures"
      ],
      "glosses": [
        "The Four Immortals"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɨ˧˦ ʔɓət̚˧˦ tɨ˧˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tɨ˨˩˦ ʔɓək̚˦˧˥ tɨ˧˨]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tɨ˦˥ ʔɓək̚˦˥ tɨ˨˩˦]",
      "note": "Saigon"
    }
  ],
  "word": "Tứ bất tử"
}