Inside the pavilion, an enormous ellipse-shaped window at the top provides a visual measurement of air quality. At a good time all of a sudden there's a great view of the Olympic Lookout Tower and the National Stadium next to it.
The design of this masterpiece is constructed in such a way that, depending on where you look at it from, it can be a "room in the city" or a "city in the room". Viewed from the other side of the Olympic Park, it is like showing the boundaries between outdoor dirt and the work of cleaning with air conditioners and filters inside residential and office spaces.
By the way, these unique panels were recycled from the nearby exposition tent structures of the Olympic Park, proving that in today's world there are plenty of opportunities to improve the environmental situation even in such a neglected state as China.