The sun in the Chinese city of Beijing has appeared blue.
The strange site has come about because the city has been hit by a second sandstorm in just two weeks. The storm was brought on by strong winds coming from Mongolia and north-western China.
The sandstorm painted the sky yellow and the Sun also appears to have turned blue! However, the Sun’s colour hasn’t actually changed. The illusion is all down to how we view objects like the Sun.
A number of tourists visiting Beijing’s Forbidden City were also affected by the sandstorm.
Lots of people have wearing masks to protect themselves while they go are outdoors.