"千古不易" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "千古",
        "3": "不易",
        "t1": "eternity",
        "t2": "unchanging"
      },
      "expansion": "千古 (“eternity”) + 不易 (“unchanging”)",
      "name": "com"
    }
  ],
  "etymology_text": "Compound of 千古 (“eternity”) + 不易 (“unchanging”)",
  "forms": [
    {
      "form": "千古不易",
      "ruby": [
        [
          "千",
          "せん"
        ],
        [
          "古",
          "こ"
        ],
        [
          "不",
          "ふ"
        ],
        [
          "易",
          "えき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "senko fueki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "せんこ ふえき"
      },
      "expansion": "千(せん)古(こ)不(ふ)易(えき) • (senko fueki)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese yojijukugo",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "the unchanging truth",
          "roman": "senko fueki no shinri",
          "ruby": [
            [
              "千古不易",
              "せんこふえき"
            ],
            [
              "真理",
              "しんり"
            ]
          ],
          "text": "千古不易の真理",
          "type": "example"
        }
      ],
      "glosses": [
        "eternally unchanging"
      ],
      "id": "en-千古不易-ja-noun-qu9ssY0y",
      "links": [
        [
          "eternally",
          "eternally"
        ],
        [
          "unchanging",
          "unchanging"
        ]
      ],
      "synonyms": [
        {
          "word": "万古不易"
        },
        {
          "word": "万世不易"
        },
        {
          "word": "万代不易"
        }
      ]
    }
  ],
  "sounds": [
    {
      "other": "せんこふえき"
    },
    {
      "ipa": "[sẽ̞ŋko̞ɸɯ̟e̞kʲi]"
    }
  ],
  "word": "千古不易"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "千古",
        "3": "不易",
        "t1": "eternity",
        "t2": "unchanging"
      },
      "expansion": "千古 (“eternity”) + 不易 (“unchanging”)",
      "name": "com"
    }
  ],
  "etymology_text": "Compound of 千古 (“eternity”) + 不易 (“unchanging”)",
  "forms": [
    {
      "form": "千古不易",
      "ruby": [
        [
          "千",
          "せん"
        ],
        [
          "古",
          "こ"
        ],
        [
          "不",
          "ふ"
        ],
        [
          "易",
          "えき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "senko fueki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "せんこ ふえき"
      },
      "expansion": "千(せん)古(こ)不(ふ)易(えき) • (senko fueki)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese compound terms",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with fifth grade kanji",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms with 4 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with multiple readings",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with usage examples",
        "Japanese yojijukugo",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "the unchanging truth",
          "roman": "senko fueki no shinri",
          "ruby": [
            [
              "千古不易",
              "せんこふえき"
            ],
            [
              "真理",
              "しんり"
            ]
          ],
          "text": "千古不易の真理",
          "type": "example"
        }
      ],
      "glosses": [
        "eternally unchanging"
      ],
      "links": [
        [
          "eternally",
          "eternally"
        ],
        [
          "unchanging",
          "unchanging"
        ]
      ],
      "synonyms": [
        {
          "word": "万古不易"
        },
        {
          "word": "万世不易"
        },
        {
          "word": "万代不易"
        }
      ]
    }
  ],
  "sounds": [
    {
      "other": "せんこふえき"
    },
    {
      "ipa": "[sẽ̞ŋko̞ɸɯ̟e̞kʲi]"
    }
  ],
  "word": "千古不易"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "千古不易"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "千古不易",
  "trace": ""
}