Dimitar Nedyalkov (1st R), Bulgarian deputy minister of transport and communications, addresses the launch ceremony of a postage stamp in celebration of the 75th anniversary of the establishment of diplomatic relations between Bulgaria and China in Sofia, Bulgaria, on Dec. 18, 2024. A special postage stamp marking the 75th anniversary of the establishment of diplomatic relations between Bulgaria and China was released at the ceremony here on Wednesday. (Photo by Marian Draganov/Xinhua)