Zheng Wanqi, a pediatrician from Northeast China's Liaoning province, knows too well the challenges of working on the Qinghai-Tibet Plateau, known as the "roof of the world."
A new land port linking Letse in Drongba county of Southwest China's Xizang autonomous region, and Nechung in Mustang county of Nepal was officially opened on Monday.
The county of Damxung, meaning "carefully selected pasture" in Tibetan language, is located at the southern foothill of the Nyainqentanglha Range, with an average elevation of about 4,200 meters.
