Group 1 - The Hangzhou Zoo has implemented a winter warming plan for animals that combines traditional wisdom and modern technology [3] - Caregivers have prepared soft, moisture-absorbing wood shavings for chimpanzees to create warm beds, while Northeast tigers have dry leaves and hidden treats in their enclosures [3] - Various heating equipment such as wooden beds, nesting boxes, and heating lamps have been provided for herbivorous animals like the Tibetan antelope and sika deer to create dry and windproof resting areas [3] Group 2 - The zoo has established independent "microclimate zones" for temperature-sensitive amphibians and reptiles, utilizing underfloor heating, heating lamps, and heating stones to maintain optimal living conditions [4] - Efficient air source heating systems have been installed in the chimpanzee, Asian elephant, and giraffe enclosures, providing stable and uniform heating throughout these areas [4]