Chinese coals have normal levels of most trace elements, but higher amounts of elements like Li, Zr, and rare earth elements due to volcanic ash. Toxic elements like Hg, As, and F are comparable to other countries. Enrichment of trace elements in Chinese coals is influenced by various factors like source rocks and hydrothermal fluids. Indoor coal combustion in China leads to health issues like fluorosis, arsenosis, selenosis, and lung cancer. Valuable elements like Ge, Ga, and REE are found in some Chinese coals at levels similar to economic deposits.