Volunteers harvest rapeseeds at a flower field opposite to the Civic Center in Futian District on Friday as rapeseeds in the field have ripened. The 3,300-square-meter land, originally a vacant lot, was converted into a flower field by Futian urban management department. More than 100,000 oilseed rape plants were planted in the field last year. And now the rapeseeds are ready for their first harvest season. The volunteers will receive the oil extracted from the rapeseeds. Before rapeseeds, the field featured sunflowers.