In some cities in the north, in spring, there will be a special phenomenon of city flying. Yangliufei is blown like snowflakes, which has to be said to be a romantic and special scenery with bright spring. Looking good is only a superficial phenomenon, and the flying sheep do more harm. First of all, it will end everywhere, which will affect the cleanliness and hygiene of the city. It takes a lot of effort for sanitation workers to sweep the floor In addition, birds are harmful to personal health and public safety.
The catkins that are harmful to people's health in the city look small and scattered, and can float far away with the wind; Catkin sticks together easily and looks a bit like cotton. When people walk outdoors or in the street, flocs flying in the air can easily enter people's nostrils, eyes or be inhaled, causing discomfort and even inflammation; Some people who are allergic will also have itching and rash because of flying flocs falling on the skin and face; People who accidentally inhale flying flocs into the trachea may also aggravate the condition of respiratory diseases such as bronchitis and asthma.
The wind that affects the safety of citizens has stopped, and the flying flocs will pollute the city appearance and sanitation, which will make the sanitation workers work hard. In addition, flying flocs will block the sight of pedestrians and drivers and increase the probability of traffic accidents; In addition, flying flocs will also affect some high-precision instruments and block the radiator on the car water tank. Flying flocs are also combustible substances, which will increase the possibility of fire no matter where they fall.