Group 1 - The 2026 National Coal Trading Conference opened in Rizhao City, lasting for three days, marking the sixth time the event has been held in this location [1] - The conference attracted participation from national departments, provincial coal industry management, coal production, transportation, sales, consumption enterprises, relevant industry associations, and financial institutions [3] - The theme of the conference was "Ensuring Safe and Stable Coal Supply to Support High-Quality Economic and Social Development," featuring an opening ceremony, the launch of the first coal train from Xinjiang to Shandong, and various specialized meetings and promotional activities [3] Group 2 - During the conference, the Shandong Rizhao-Xinjiang Hami Coal Industry Cooperation Development Conference was held, bringing together coal industry stakeholders from Shandong, Xinjiang, Gansu, Shaanxi, and Shanxi provinces to discuss promoting coal exports and establishing a platform for coal production, transportation, and sales [5] - The conference aimed to contribute to the high-quality development of the coal industry and ensure national energy supply [5]