The temperature was so low that we felt cold even wearing a heavy coat. Some of us relied on hand warmer pads to keep our hands warm. Though they are helpful, the chemicals in them can be harmful to our health and the environment. Group Training Section recently organized a virtual workshop, in which a professional instructor talked about the materials in disposable hand warmer pads and how they can harm our health and the environment. The instructor also showed our colleagues how to make eco-friendly hand warmers using Chinese herbs.