"sib ntsib dua" meaning in White Hmong

{
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "interjection"
      },
      "expansion": "sib ntsib dua",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "White Hmong entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "goodbye"
      ],
      "id": "en-sib_ntsib_dua-mww-intj-guNaY866",
      "links": [
        [
          "goodbye",
          "goodbye"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʂi˥.ᶯd͡ʐi˥.duə̯˧/"
    }
  ],
  "word": "sib ntsib dua"
}

{
  "head_templates": [
    {
      "args": {
        "1": "mww",
        "2": "interjection"
      },
      "expansion": "sib ntsib dua",
      "name": "head"
    }
  ],
  "lang": "White Hmong",
  "lang_code": "mww",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "White Hmong entries with incorrect language header",
        "White Hmong interjections",
        "White Hmong lemmas",
        "White Hmong multiword terms",
        "White Hmong terms with IPA pronunciation"
      ],
      "glosses": [
        "goodbye"
      ],
      "links": [
        [
          "goodbye",
          "goodbye"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ʂi˥.ᶯd͡ʐi˥.duə̯˧/"
    }
  ],
  "word": "sib ntsib dua"
}