Tianmushan–Qingliangfeng Biosphere Reserve, located in Hangzhou, Zhejiang Province, covers an area roughly half the size of Hong Kong. In 1996, Tianmushan was designated as a UNESCO Biosphere Reserve. In 2024, it was expanded to include the Zhejiang Qingliangfeng National Nature Reserve, becoming the first biosphere reserve in China to be established through an extension.

Xianren Peak of Tianmu Mountain faces Daxian Peak of East Tianmu, each crowned with a pool that never dries, like two eyes gazing at the sky—hence the name "Tianmu," or "Eyes of Heaven." Known as the "Realm of Giant Trees," it shelters the world's tallest golden larch, the oldest wild ginkgo communities, as well as the last five wild Tianmu Ostrya on Earth.

Qingliang Peak is renowned for its alpine meadows, shrublands, and habitats for rare plants. Together with Tianmu Mountain, it forms a forest ecosystem with a complete vertical gradient. It is also a sanctuary for wild sika deer and serves as a key genetic source area for this species in China.

The reserve boasts remarkable biodiversity, with 2,461 species of higher plants, including rare trees such as shiny silk tassel and Chinese yew. It also provides habitat for 374 vertebrate species, where animals like the black muntjac, Chinese pangolin, and Anji salamander thrive.

Tianmushan and Qingliangfeng complement each other. With towering ancient trees, rare wildlife, and a cultural tradition of nature conservation spanning centuries, they stand together as a living story of harmony—where nature and culture thrive side by side.