"nội bất xuất, ngoại bất nhập" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
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    {
      "args": {
        "1": "内",
        "2": "inside",
        "3": "不出",
        "4": "to not come out",
        "5": "外",
        "6": "outside",
        "7": "不入",
        "8": "to not come in"
      },
      "expansion": "Sino-Vietnamese word from 内 (“inside”), 不出 (“to not come out”), 外 (“outside”) and 不入 (“to not come in”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 内 (“inside”), 不出 (“to not come out”), 外 (“outside”) and 不入 (“to not come in”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "phrases",
        "head": "",
        "sc": "",
        "sort": "",
        "tr": "",
        "ts": ""
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      "expansion": "nội bất xuất, ngoại bất nhập",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "nội bất xuất, ngoại bất nhập",
      "name": "vi-phrase"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "_dis": "79 21",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
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        {
          "_dis": "86 14",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
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        {
          "_dis": "77 23",
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "88 12",
          "kind": "other",
          "name": "Sino-Vietnamese words with uncreated Han etymology",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "86 14",
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
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      ],
      "glosses": [
        "nothing inside can come out, nothing outside can come in"
      ],
      "id": "en-nội_bất_xuất,_ngoại_bất_nhập-vi-phrase-Ds1fKDh4",
      "qualifier": "literal",
      "raw_glosses": [
        "(literal) nothing inside can come out, nothing outside can come in"
      ]
    },
    {
      "glosses": [
        "the place in question is sealed shut or heavily guarded"
      ],
      "id": "en-nội_bất_xuất,_ngoại_bất_nhập-vi-phrase-a~R2d8hS"
    }
  ],
  "sounds": [
    {
      "ipa": "[noj˧˨ʔ ʔɓət̚˧˦ swət̚˧˦ ŋwaːj˧˨ʔ ʔɓət̚˧˦ ɲəp̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[noj˨˩ʔ ʔɓək̚˦˧˥ swək̚˦˧˥ ŋwaːj˨˩ʔ ʔɓək̚˦˧˥ ɲəp̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[noj˨˩˨ ʔɓək̚˦˥ s⁽ʷ⁾ək̚˦˥ ŋwaːj˨˩˨ ʔɓək̚˦˥ ɲəp̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "nội bất xuất, ngoại bất nhập"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Sino-Vietnamese words",
    "Sino-Vietnamese words with uncreated Han etymology",
    "Vietnamese entries with incorrect language header",
    "Vietnamese lemmas",
    "Vietnamese phrases",
    "Vietnamese terms with IPA pronunciation"
  ],
  "etymology_templates": [
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        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
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    {
      "args": {
        "1": "内",
        "2": "inside",
        "3": "不出",
        "4": "to not come out",
        "5": "外",
        "6": "outside",
        "7": "不入",
        "8": "to not come in"
      },
      "expansion": "Sino-Vietnamese word from 内 (“inside”), 不出 (“to not come out”), 外 (“outside”) and 不入 (“to not come in”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 内 (“inside”), 不出 (“to not come out”), 外 (“outside”) and 不入 (“to not come in”).",
  "head_templates": [
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      "args": {
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        "sort": "",
        "tr": "",
        "ts": ""
      },
      "expansion": "nội bất xuất, ngoại bất nhập",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "nội bất xuất, ngoại bất nhập",
      "name": "vi-phrase"
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  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "phrase",
  "senses": [
    {
      "glosses": [
        "nothing inside can come out, nothing outside can come in"
      ],
      "qualifier": "literal",
      "raw_glosses": [
        "(literal) nothing inside can come out, nothing outside can come in"
      ]
    },
    {
      "glosses": [
        "the place in question is sealed shut or heavily guarded"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[noj˧˨ʔ ʔɓət̚˧˦ swət̚˧˦ ŋwaːj˧˨ʔ ʔɓət̚˧˦ ɲəp̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
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    },
    {
      "ipa": "[noj˨˩ʔ ʔɓək̚˦˧˥ swək̚˦˧˥ ŋwaːj˨˩ʔ ʔɓək̚˦˧˥ ɲəp̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[noj˨˩˨ ʔɓək̚˦˥ s⁽ʷ⁾ək̚˦˥ ŋwaːj˨˩˨ ʔɓək̚˦˥ ɲəp̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "nội bất xuất, ngoại bất nhập"
}