Photo taken on Oct. 14, 2019 shows the autumn scenery in Riga, Latvia. (Photo by Edijs Palens/Xinhua)

A woman walks in a city park in Riga, Latvia, on Oct. 14, 2019. (Photo by Edijs Palens/Xinhua)

People enjoy the autumn scenery in Riga, Latvia, on Oct. 14, 2019. (Photo by Edijs Palens/Xinhua)

Photo taken on Oct. 14, 2019 shows the autumn scenery in Riga, Latvia. (Photo by Edijs Palens/Xinhua)

People enjoy the autumn scenery in Riga, Latvia, on Oct. 14, 2019. (Photo by Edijs Palens/Xinhua)

Photo taken on Oct. 14, 2019 shows the autumn scenery in Riga, Latvia. (Photo by Edijs Palens/Xinhua)