South China Morning Post
Before electricity, central heating, and down quilts, winter in ancient China was not simply a season but a test of class. Cold was shared by everyone, but warmth was usually not. During the Han dynasty (206 BC-220), emperors used specially designed “Warm Chambers” to protect themselves from the winter cold. The walls were plastered with a mixture of mud and Sichuan peppercorns, thought to preserve heat while resisting dampness and insects; curtains and screens helped keep out draughts. These...
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