"ẑ" meaning in Mandarin

{
  "etymology_templates": [
    {
      "args": {
        "1": "zh",
        "2": "《中國話寫法拉丁化指南》"
      },
      "expansion": "《中國話寫法拉丁化指南》",
      "name": "lang"
    },
    {
      "args": {
        "1": "zh",
        "2": "王弦"
      },
      "expansion": "王弦",
      "name": "lang"
    }
  ],
  "etymology_text": "Probably derived from Esperanto usage of ĉ and ŝ.\nProposal of this series for use in Chinese latinisation is noted as early as 1939 in Latinxua Sin Wenz literature (such as 《中國話寫法拉丁化指南》 by 王弦, page 78).",
  "head_templates": [
    {
      "args": {
        "notr": "1"
      },
      "expansion": "ẑ",
      "name": "cmn-pinyin"
    }
  ],
  "lang": "Mandarin",
  "lang_code": "cmn",
  "pos": "romanization",
  "senses": [
    {
      "alt_of": [
        {
          "word": "zh"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Hanyu Pinyin",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Rare spelling of zh."
      ],
      "id": "en-ẑ-cmn-romanization-b1pb0VpA",
      "links": [
        [
          "zh",
          "zh#Mandarin"
        ]
      ],
      "tags": [
        "alt-of",
        "rare"
      ],
      "wikipedia": [
        "Latinxua Sin Wenz"
      ]
    }
  ],
  "word": "ẑ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "zh",
        "2": "《中國話寫法拉丁化指南》"
      },
      "expansion": "《中國話寫法拉丁化指南》",
      "name": "lang"
    },
    {
      "args": {
        "1": "zh",
        "2": "王弦"
      },
      "expansion": "王弦",
      "name": "lang"
    }
  ],
  "etymology_text": "Probably derived from Esperanto usage of ĉ and ŝ.\nProposal of this series for use in Chinese latinisation is noted as early as 1939 in Latinxua Sin Wenz literature (such as 《中國話寫法拉丁化指南》 by 王弦, page 78).",
  "head_templates": [
    {
      "args": {
        "notr": "1"
      },
      "expansion": "ẑ",
      "name": "cmn-pinyin"
    }
  ],
  "lang": "Mandarin",
  "lang_code": "cmn",
  "pos": "romanization",
  "senses": [
    {
      "alt_of": [
        {
          "word": "zh"
        }
      ],
      "categories": [
        "Hanyu Pinyin",
        "Mandarin entries with incorrect language header",
        "Mandarin non-lemma forms",
        "Mandarin rare forms",
        "Mandarin terms with redundant script codes",
        "Pages with 3 entries"
      ],
      "glosses": [
        "Rare spelling of zh."
      ],
      "links": [
        [
          "zh",
          "zh#Mandarin"
        ]
      ],
      "tags": [
        "alt-of",
        "rare"
      ],
      "wikipedia": [
        "Latinxua Sin Wenz"
      ]
    }
  ],
  "word": "ẑ"
}