A staff member shows detoxified potato plantlets produced using plant tissue culture methods at a potato company in Weining County of Bijie, southwest China's Guizhou Province, March 15, 2018. Under a government plan to optimize rural economic structure and boost personal income, farmers here are encouraged to switch from traditional agricultural practices to alternative undertakings such as herb-planting and cultivation of counter-seasonal vegetables. (Xinhua/Yang Wenbin)