Group 1 - The "Zhonghua Niulong" stamp was launched at the Guangzhou Tower Theater on January 30, marking the start of the "Giant Dragon Evolution: Exploring Prehistoric Fossils" educational activity [1] - The stamp features the world's first feathered dinosaur fossil, "Zhonghua Niulong," which represents an important transitional form in the evolution from dinosaurs to birds [8] - The event included a Q&A session with Professor Ji Qiang, the discoverer of the "Zhonghua Niulong" fossil, and the Chairman of the Guangdong Museum Association, Chen Shaofeng, engaging with young audiences [3][6] Group 2 - The "Zhonghua Niulong" fossil was discovered in 1996 by Ji Qiang, who was then the director of the China Geological Museum, and was officially named in 2022 [6] - The research efforts of Ji Qiang and other Chinese scientists have contributed to the understanding of the evolutionary link between birds and dinosaurs, leading to the recognition of this scientific consensus in educational materials [6] - The stamp issuance signifies the comprehensive launch of the "Giant Dragon Evolution" exhibition series, which aims to create an integrated platform for science education through exhibitions, research, and practical activities [8]