Photo taken on Aug. 4, 2018 shows floating water lanterns during a water lantern festival at National Habor in Maryland, the United States. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display. (Photos:Xinhua) 

Photo taken on Aug. 4, 2018 shows floating water lanterns during a water lantern festival at National Habor in Maryland, the United States. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display.

Photo taken on Aug. 4, 2018 shows floating water lanterns during a water lantern festival at National Habor in Maryland, the United States. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display.

A boy releases a water lantern during a water lantern festival at National Habor in Maryland, the United States, Aug. 4, 2018. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display. 

A woman walks among floating water lanterns during a water lantern festival at National Habor in Maryland, the United States, Aug. 4, 2018. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display. 

Photo taken on Aug. 4, 2018 shows floating water lanterns during a water lantern festival at National Habor in Maryland, the United States. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display. 

People watch floating water lanterns during a water lantern festival at National Habor in Maryland, the United States, Aug. 4, 2018. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display.  

A man prepares to release a water lantern during a water lantern festival at National Habor in Maryland, the United States, Aug. 4, 2018. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display.

A girl holds a water lantern during a water lantern festival at National Habor in Maryland, the United States, Aug. 4, 2018. Lanterns were set afloat to glow on the Potomac River for the Water Lantern Festival on Saturday, creating a spectacular and glistening light display.