Group 1 - The 2025 International Forum on Substance Reactive Transport was held in Changchun from September 19 to 21, focusing on new theories, methods, technologies, and challenges in the field of groundwater reactive solute transport [1] - The conference featured 19 renowned experts from various countries, discussing topics such as solute transport theory in porous media, reactive transport numerical simulation, isotope tracing technology, and site contamination remediation mechanisms [1] - Zhang Wenjuan from the Water Engineering and Environmental Geology Center presented on the impact of human activities on the hydrochemical characteristics and water quality evolution of karst groundwater systems in northern China [1] Group 2 - Liu Xiao from the Shandong Geothermal Energy Exploration and Development Research Institute discussed the formation mechanism of carbonate rock geothermal reservoirs and sustainable development practices, using heating demonstration projects as a case study [2] - The Shandong Geothermal Energy Institute has increased investment in geothermal clean energy exploration and development, focusing on ecological protection and high-quality development in the Yellow River Basin [2] - The institute has established several research platforms and innovation teams, contributing to national energy resource security and environmental protection [2]