Photo taken on April 10, 2019 shows the scenery of the seaside city Dubrovnik, Croatia. (Photos: Xinhua)

Photo taken on April 10, 2019 shows the night view of the seaside city Dubrovnik, Croatia.

Photo taken on April 10, 2019 shows the night view of the seaside city Dubrovnik, Croatia.

Photo taken on April 10, 2019 shows the night view of the seaside city Dubrovnik, Croatia.

Photo taken on April 10, 2019 shows the scenery of the seaside city Dubrovnik, Croatia.