Chá Yǔ Wēnquán — 'Tea Rain Hot Spring' — is a geothermal spring in the Chayu area of the Tibetan Autonomous Region or Yunnan Province in China, where the transition from the Tibetan Plateau to the subtropical forests of the Hengduan Mountain range creates a unique ecological zone of extraordinary biodiversity and geothermal activity. The Chayu (Tsayul) valley in eastern Tibet is one of the most botanically rich areas in China, known for its wild tea plants, orchids, and ancient forests, and the hot springs of the region offer therapeutic geothermal bathing in a setting of exceptional natural wealth. The spring's poetic name evokes the fragrant rain that falls on the tea forests surrounding this remarkable geothermal site.
Insider tip — Located in northern Guangdong Province at approximately 24°N, this spring taps into thermal gradients within the South China granitic basement. Waters emerge at 38°C and are typically sodium-bicarbonate in character, gentle and softening on skin. The Pearl River Delta's subtropical climate means outdoor pool bathing is comfortable from October through April.