Get all provinces

```javascript WXAPI.provinceV2() ``` ```json { "code": 0, "data": [ { "firstLetter": "b", "id": "110000000000", "jianpin": "bjs", "level": 1, "name": "Beijing City", "nameEn": "Beijing", "pinyin": "beijingshi" }, { "firstLetter": "z", "id": "330000000000", "jianpin": "zjs", "level": 1, "name": "Zhejiang Province", "nameEn": "Zhejiang", "pinyin": "zhejiangsheng" } ], "msg": "success" } ```