Merge branch 'WJC' into temp-wxr

wxr

2021-03-29 2f3a162c3960bedc86081af9823b1683db27bb63

 HDL_ON/Entity/ResponseEntity/CityInfo.cs

@@ -57,7 +57,7 @@
        public string windDir;
        //"UpdateTime": "0001-01-01T00:00:00",
        public string aqi;
        public string air_Quality;
        public string air_Quality = "--";
        public string pm10;
        public string pm25 = "--";
        public string no2;