Group 1 - The core event was the 2026 WeChat Open Class PRO held in Guangzhou, where HarmonyOS development experts made their first official appearance as guest speakers, focusing on "cross-platform adaptation and experience enhancement" [1] - The collaboration between WeChat and HarmonyOS is highlighted as a practical example of their joint efforts in ecosystem development, showcasing active communication and cooperation in technology [1][4] - The event served as a crucial communication platform connecting developers, industry partners, and the platform, emphasizing the shared goal of enhancing user experience [4] Group 2 - Various topics were discussed during the event, including upgrades to mini-program capabilities, performance optimization, and the introduction of WeChat Developer Tools 2.0 [2][4] - Specific sessions included discussions on WeChat gateway security, AI integration in cloud development, and the collaboration between mini-programs and smart hardware [4] - HarmonyOS's participation as a key speaker reflects its commitment to sharing technical expertise in web kernels and cross-platform adaptation [4][6]