Can I go to Chongdugou to play in rainy days?

It is estimated that two days ago, many people went to the flight tracking website FlightRadar24 or FlightAware to track the flight information of an old woman. Because there are many people online at the same time, the website has been in a "crowded" state for a long time, and some new users simply can't squeeze in. The website was once "paralyzed". In fact, there are also some apps in China that can provide flight information, such as "very accurate". I often use it to check the take-off and landing time, airport status, flight status, weather conditions and the position in the air after taking off. So, why can we find their relevant information on computers, mobile phones or tablets in real time when planes are flying in the air? In fact, flight data contains a lot of information, which is common. We usually pay more attention to the weather, flight information, airspace flow and so on. Generally speaking, these data come from three main sources: