Central and eastern China are experiencing widespread hot and humid conditionsCHINA’S thermal coal prices are rebounding as a mild start to summer finally gives way to hotter weather, boosting air-conditioner usage and power demand. Prices could rise further as intense heat grips much of the nation, according to the China Coal Transportation and Distribution Association. Central and eastern China are experiencing widespread hot and humid conditions as two high-pressure systems merge to form a heat dome, according to the China Meteorological Administration. Coal prices had slipped earlier this summer as utilities built up stockpiles in anticipation that El Nino would bring heat and drive up air-conditioning demand. Instead, much of the country was doused with heavy and persistent rainstorms that cooled temperatures and helped boost hydropower generation — offsetting some coal demand.