Group 1 - The 2025 China Rubik's Cube Sports Tour series has commenced in Shantou, Guangdong, with over 100 participants from more than 60 Rubik's Cube associations and training institutions across the country attending a three-day referee training course [1][2] - The training emphasizes the importance of referees in maintaining order and fairness in Rubik's Cube competitions, highlighting the need for their professionalism and integrity [1] - The National Sports Administration plans to enhance support for the development of Rubik's Cube sports, improve the event system, and organize more high-level competitions while also focusing on the training and development of referees [1][3] Group 2 - The training course features practical content delivered by industry experts, covering topics such as competition etiquette, referee self-awareness, the development of smart cubes, and key elements of the "China Rubik's Cube Competition Rules" [2] - The establishment of the China Rubik's Cube Sports Work Committee marks a significant milestone in the professionalization of Rubik's Cube competitions [2] - The upcoming 2025 China Rubik's Cube Sports Tour series event in Shantou will see over 500 competitors participating in various categories, including individual and team events [2]