A child displays the first-day cover of a set of commemorative philatelic products at a philatelic shop in south China's Macao, Dec. 20, 2024. The Macao Post and Telecommunications Bureau issued philatelic products on Dec. 20 to mark the 25th anniversary of the establishment of the Macao Special Administrative Region and the 25th anniversary of the Chinese People's Liberation Army garrison stationed in Macao. [Photo/Xinhua]