Targeting the ecosystems in the region, SEE’s conservation work in Sanjiangyuan Region aims to safeguard China’s most unique plateau ecosystem and the freshwater sources for 700 million Chinese people. Since its initiation in 2012, the project has engaged 130 local environmental organizations in the conservation network. In 2023, it funded five new projects, established experimental grassland restoration plots covering an area of 53.33 hectares, and cumulatively protected an area of 127,5000 square kilometers. On the basis of the original initiative, the project also established a community interaction network model, continued to form a corresponding conservation network with the existing partner organizations, and continued to subsidize local organizations to carry out projects on conservation issues such as species conservation, water source protection and pasture management. Through field visits and investigations of the no-man’s-land at Sanjiangyuan borders, the project will develop a feasible development plan that will gradually diminish the threats from too many human activities in the no-man’s-land and promote the harmonious co-existence between human and nature. Built on the experiences of its conservation efforts in the region in the past five years, SEE will continue to implement science-based and community-based conservation actions that aim to promote the harmonious co-existence between the local communities and the surrounding environment, maintain the authenticity of the ecosystems in the region, and realise the harmony between man and nature in Sanjiangyuan Region.