sample

rank.json

{
  "last_update": "2019/09/29 12:00:17",
  "data": [
    {
      "index": 1,
      "flag": "vn",
      "city": "Ha Noi",
      "nation": "Viet Nam",
      "aqi": 180
    },
    {
      "index": 2,
      "flag": "cn",
      "city": "Chengdu",
      "nation": "China",
      "aqi": 168
    },
    {
      "index": 3,
      "flag": "in",
      "city": "Jakarta",
      "nation": "Indonesia",
      "aqi": 164
    },
    {
      "index": 4,
      "flag": "cn",
      "city": "Shenzhen",
      "nation": "China",
      "aqi": 157
    },
    {
      "index": 5,
      "flag": "cn",
      "city": "Chongqing",
      "nation": "China",
      "aqi": 156
    },
    {
      "index": 6,
      "flag": "cn",
      "city": "Beijing",
      "nation": "China",
      "aqi": 155
    },
    {
      "index": 7,
      "flag": "cn",
      "city": "Hangzhou",
      "nation": "China",
      "aqi": 154
    },
    {
      "index": 8,
      "flag": "cn",
      "city": "Wuhan",
      "nation": "China",
      "aqi": 120
    },
    {
      "index": 9,
      "flag": "cn",
      "city": "Shenyang",
      "nation": "China",
      "aqi": 80
    },
    {
      "index": 10,
      "flag": "hk",
      "city": "Hong Kong",
      "nation": "Hong Kong SAR",
      "aqi": 40
    }
  ]
}