A child on a bike cools off at a splash pad in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
Pedestrians holding beverages walk in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
A woman eating an ice cream walks in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
Children cool off at a splash pad in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
Children cool off at a splash pad in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
A child cools off at a splash pad in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
People cool off near a fountain in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
Pedestrians eating ice creams walk in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
A child on a bike cools off at a splash pad in downtown Frankfurt， Germany， on June 17， 2021。 The highest temperature in Frankfurt reached 36 degrees Celsius on Thursday。 （Xinhua/Lu Yang）
