"艱難辛苦" meaning in Japanese

{
  "forms": [
    {
      "form": "艱難辛苦",
      "ruby": [
        [
          "艱",
          "かん"
        ],
        [
          "難",
          "なん"
        ],
        [
          "辛",
          "しん"
        ],
        [
          "苦",
          "く"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kannan shinku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kannansinku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "かんなんしんく",
      "roman": "kannansinku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "かんなん しんく",
        "hhira": "かんなんしんく"
      },
      "expansion": "艱(かん)難(なん)辛(しん)苦(く) • (kannan shinku) ^(←かんなんしんく (kannansinku)?)",
      "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 redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese yojijukugo",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "hardship"
      ],
      "id": "en-艱難辛苦-ja-noun-roLZ6ex1",
      "links": [
        [
          "hardship",
          "hardship"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "かんなんしんく"
    },
    {
      "ipa": "[kã̠nːã̠ɰ̃ ɕĩŋkɯ̟ᵝ]"
    }
  ],
  "word": "艱難辛苦"
}

{
  "forms": [
    {
      "form": "艱難辛苦",
      "ruby": [
        [
          "艱",
          "かん"
        ],
        [
          "難",
          "なん"
        ],
        [
          "辛",
          "しん"
        ],
        [
          "苦",
          "く"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kannan shinku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "kannansinku",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "かんなんしんく",
      "roman": "kannansinku",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "かんなん しんく",
        "hhira": "かんなんしんく"
      },
      "expansion": "艱(かん)難(なん)辛(しん)苦(く) • (kannan shinku) ^(←かんなんしんく (kannansinku)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "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 hyōgaiji kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with sixth grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with four Han script characters",
        "Japanese yojijukugo"
      ],
      "glosses": [
        "hardship"
      ],
      "links": [
        [
          "hardship",
          "hardship"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "かんなんしんく"
    },
    {
      "ipa": "[kã̠nːã̠ɰ̃ ɕĩŋkɯ̟ᵝ]"
    }
  ],
  "word": "艱難辛苦"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "艱難辛苦"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "艱難辛苦",
  "trace": "started on line 2, detected on line 2"
}

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