"thương hải tang điền" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "滄海桑田"
      },
      "expansion": "",
      "name": "etymid"
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    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "滄海桑田",
        "2": "turning the high seas into mulberry forests"
      },
      "expansion": "Sino-Vietnamese word from 滄海桑田 (“turning the high seas into mulberry forests”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 滄海桑田 (“turning the high seas into mulberry forests”)",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "thương hải tang điền",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "thương hải tang điền",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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        {
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          "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"
        }
      ],
      "glosses": [
        "an epic change"
      ],
      "id": "en-thương_hải_tang_điền-vi-noun-SmX68XBc",
      "links": [
        [
          "epic",
          "epic"
        ]
      ],
      "raw_glosses": [
        "(dated, literary) an epic change"
      ],
      "related": [
        {
          "word": "tang hải"
        },
        {
          "word": "tang thương"
        }
      ],
      "tags": [
        "dated",
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˧˩ taːŋ˧˧ ʔɗiən˨˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˧˨ taːŋ˧˧ ʔɗiəŋ˦˩]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˨˩˦ taːŋ˧˧ ʔɗiəŋ˨˩]",
      "note": "Saigon"
    }
  ],
  "word": "thương hải tang điền"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "滄海桑田"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "滄海桑田",
        "2": "turning the high seas into mulberry forests"
      },
      "expansion": "Sino-Vietnamese word from 滄海桑田 (“turning the high seas into mulberry forests”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 滄海桑田 (“turning the high seas into mulberry forests”)",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "thương hải tang điền",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "thương hải tang điền",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "related": [
    {
      "word": "tang hải"
    },
    {
      "word": "tang thương"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Vietnamese words",
        "Vietnamese dated terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese literary terms",
        "Vietnamese nouns",
        "Vietnamese terms with IPA pronunciation"
      ],
      "glosses": [
        "an epic change"
      ],
      "links": [
        [
          "epic",
          "epic"
        ]
      ],
      "raw_glosses": [
        "(dated, literary) an epic change"
      ],
      "tags": [
        "dated",
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˧˩ taːŋ˧˧ ʔɗiən˨˩]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˧˨ taːŋ˧˧ ʔɗiəŋ˦˩]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[tʰɨəŋ˧˧ haːj˨˩˦ taːŋ˧˧ ʔɗiəŋ˨˩]",
      "note": "Saigon"
    }
  ],
  "word": "thương hải tang điền"
}