Workers are seen at the construction site of a bridge across the Sava and Kolubara rivers in Obrenovac, Serbia, June 27, 2019. The construction of a bridge across the Sava and Kolubara rivers is an exemplary project, which also symbolizes the good relations between the peoples and presidents of Serbia and China, said Serbia's Deputy Prime Minister Zorana Mihajlovic here on Thursday. (Xinhua/Nemanja Cabric)