Guan Weixing (left) learns more about highland barley agriculture in the Qiang Ga township, Lhunzhub county, Lhasa in Southwest China's Tibet autonomous region, on May 7, 2013. Guan, a 42-year-old researcher, from the Tibet Academy of Agricultural and Animal Husbandry Sciences, has been engaged in barley farming and expanding new varieties of it for 18 years. He was granted the Tibet autonomous region Science and Technology Progress award for promoting ”Tibet highland barley No 690” - a new variety of highland barley. [Photo/Xinhua]