[
  {
    "id": 10000,
    "name": "发型",
    "desc": "初始发型",
    "price": 100,
    "upgrade_to_item_id": 10001,
    "batch_useable": false,
    "quality": 1,
    "exchange_stream": {
      "id": 10001,
      "num": 2
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 3
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 2
    }
  },
  {
    "id": 10001,
    "name": "外套",
    "desc": "初始外套",
    "price": 100,
    "upgrade_to_item_id": 10002,
    "batch_useable": false,
    "quality": 1,
    "exchange_stream": {
      "id": 10002,
      "num": 2
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 4
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 3
    }
  },
  {
    "id": 10002,
    "name": "上衣",
    "desc": "初始上衣",
    "price": 100,
    "upgrade_to_item_id": 10003,
    "batch_useable": true,
    "quality": 2,
    "exchange_stream": {
      "id": 10003,
      "num": 3
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 5
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 4
    }
  },
  {
    "id": 10003,
    "name": "裙子",
    "desc": "初始下装",
    "price": 100,
    "upgrade_to_item_id": 10004,
    "batch_useable": true,
    "quality": 2,
    "exchange_stream": {
      "id": 10004,
      "num": 3
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 6
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 5
    }
  },
  {
    "id": 10004,
    "name": "袜子",
    "desc": "初始袜子",
    "price": 100,
    "upgrade_to_item_id": 10005,
    "batch_useable": false,
    "quality": 2,
    "exchange_stream": {
      "id": 10005,
      "num": 4
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 7
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 6
    }
  },
  {
    "id": 10005,
    "name": "鞋子",
    "desc": "初始鞋子",
    "price": 100,
    "upgrade_to_item_id": 10006,
    "batch_useable": true,
    "quality": 3,
    "exchange_stream": {
      "id": 10006,
      "num": 4
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 8
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 7
    }
  },
  {
    "id": 10006,
    "name": "发饰",
    "desc": "初始发饰",
    "price": 100,
    "upgrade_to_item_id": 10007,
    "batch_useable": false,
    "quality": 3,
    "exchange_stream": {
      "id": 10007,
      "num": 5
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 9
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 8
    }
  },
  {
    "id": 10007,
    "name": "中秋节发饰",
    "desc": "中秋节发饰",
    "price": 200,
    "upgrade_to_item_id": 10008,
    "expire_time": 1633881599,
    "batch_useable": false,
    "quality": 2,
    "exchange_stream": {
      "id": 10008,
      "num": 5
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 10
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 9
    }
  },
  {
    "id": 10008,
    "name": "中秋节鞋子",
    "desc": "中秋节鞋子",
    "price": 300,
    "upgrade_to_item_id": 10009,
    "expire_time": 1633967999,
    "batch_useable": false,
    "quality": 3,
    "exchange_stream": {
      "id": 10009,
      "num": 6
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 11
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 10
    }
  },
  {
    "id": 10009,
    "name": "礼包",
    "desc": "中秋节礼包",
    "price": 100,
    "upgrade_to_item_id": 10000,
    "batch_useable": true,
    "quality": 4,
    "exchange_stream": {
      "id": 10000,
      "num": 6
    },
    "exchange_list": [
      {
        "id": 10001,
        "num": 2
      },
      {
        "id": 10002,
        "num": 12
      }
    ],
    "exchange_column": {
      "id": 10001,
      "num": 11
    }
  }
]