Group 1 - The event "2025 Choral and Conducting Arts Expo" opened on September 27 in Hangzhou, integrating five major components: exhibition, conference, competition, evaluation, and gathering, showcasing high-level artistic performances [1] - The event is guided by the Hangzhou Municipal Bureau of Culture, Radio, Television and Tourism, and organized by the Hangzhou Library and Zhejiang Choral Association, featuring performances from various choirs including the Hangzhou Children's Choir and the China Academy of Art Student Choir [1] - Notable experts from the national choral community attended, including professors and prominent conductors, highlighting the event's academic depth and its significant position in the national choral field [1] Group 2 - The event marks the 15th anniversary of the establishment of the Hangzhou Choral Arts Center, reflecting on history and honoring heroes through song while also exploring the integration of cutting-edge technologies like artificial intelligence with choral arts [2] - The expo aims to promote innovation in creation, performance, and teaching models, contributing to the continuous cultural development of the city [2]