Group 1 - The article highlights various art exhibitions taking place in Shanghai and Beijing, focusing on historical and cultural themes, including significant collections and rare artifacts [1][4][6] - The "Pen Array Sweep" exhibition commemorates the 120th anniversary of the revolutionary and calligrapher Shu Tong, showcasing his relationship with Shanghai and featuring rare documents [1][6] - The "Golden Threads" exhibition in Beijing presents over 170 ancient gold artifacts, illustrating China's gold craftsmanship achievements over three millennia [1][51] Group 2 - The "Shanghai Library Collection of Suzhou Pan Family Classics Exhibition" features over 150 pieces of historical documents and literature from the Pan family, a prominent lineage in Suzhou [4][6] - The "Deng Sanmu Literary and Artifacts Exhibition" displays numerous writing tools and documents related to the scholar-artist Deng Sanmu, emphasizing his contributions to art and literature [1][35][15] - The "Imprint of the Ancient Kingdom of Dian" exhibition showcases over 200 artifacts from the ancient Dian culture, highlighting archaeological achievements in Yunnan [1][17]