Photo taken on Sept.17 shows that agricultural expert Dong Daofeng (middle) gives guidance on potato production to local agricultural technicians (right) in Charig Village, Namling County, Shigatse City. [Photo/Xinhua]

Photo taken on Sept.17 shows that agricultural expert Dong Daofeng (front) passes on fruit tree grafting method to farmers at the planting base of Ema Township in Namling County, Shigatse City. [Photo/Xinhua]

Photo taken on Sept.17 shows that agricultural expert Zhao Zhizhong (left) gives guidance on Chinese cabbage production at the planting base of Ema Township in Namling County, Shigatse City. [Photo/Xinhua]