Some bathhouses in China are invigorating the traditional hot spring experience with “hotpot baths”, where visitors immerse themselves in a chilli pepper “soup” inspired by the principles of traditional Chinese medicine (TCM). In October, a resort in Harbin, the capital of Heilongjiang, China’s northernmost province, elevated the experience further by introducing a two-tone soup pool, offering a more visually stunning attraction. In restaurants, the yuan yang hotpot, or Mandarin duck hotpot,...