Qinghai cleanup begins to take flight

Efforts to restore and protect the environment around China's largest inland lake are ensuring the safety of migratory bird species and local wildlife, and turning back the eco-clock to the 1980s heyday. Kang Bing and Liu Xiangrui report from Xining.

Almost every day, Li Yinghua walks through a window-lined sunken passage to his office, where banks of computer screens show real-time images of wild birds in the Qinghai Lake National Nature Reserve in Qinghai province.

"It's my job to monitor the screens," he said. "I observe the birds' activities, captured by video cameras installed at different points, to keep a record and watch for signs of abnormality."