Heavy snow in April? No, it is just the annual catkin season view in Hangzhou, east China's Zhejiang Province. /CFP

Although they look beautiful in pictures, the fluffy clusters can become a nuisance and pose potential risks to people's health as well as traffic visibility. /CFP

Chinese parasol catkins float in the air and on the West Lake. /CFP

Cities like Hangzhou in China have been trying to reduce the fuzz in spring. /CFP