Coal piles up at the Port of Rizhao, East China's Shandong Province on November 28, 2021. China has been ramping up the production and transportation of coal, along with oil and gas as well as renewables, to cope with the winter peak season for electricity. China State Railway Group Co transported 118 million tons of thermal coal from November 1 to 26, up 34.6 percent year-on-year. Photo: VCG