The hotel floats in the air.

The suspended height of tiny particles (dust) in the air is related to local air pressure, wind speed and suspended particle diameter. This height is different in different places. Where the wind speed is high, the height is higher, and vice versa. The larger the particle size, the lower the suspension height, and the smaller the particle size, the higher the suspension height. Low air pressure, high hanging height, high air pressure and low hanging height.

Under the action of gravity, the dust will not stop when it reaches 30 to 40 meters above the ground (in the air, a floating belt is formed at the position of 25 to 33 meters-there is such a saying). Dust will not stop in the stratosphere from the ground 10 km to 52 km.