People walk in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

A boy cools off with an iced drink in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

An ice-cream car is seen on the street in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

People cool off in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

People cool off in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

A boy cools off in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

A woman walks her dog in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua

People cool off in the mist garden near the Unisphere in Flushing Meadows Corona Park in New York, the United States, Aug. 13, 2021. A heat wave recently hit New York City.Photo:Xinhua