Zhao Runsheng, a Shanxi calligrapher, writes the name of the program on a wheaten balloon with a diameter of 1.8 meters, the current largest wheaten balloon in the world, at the launch ceremony. [Photo/pingyao.gov.cn]

Shi Yong, a top official of Pingyao county, addresses the launch ceremony of the World Wheaten Foods Conference in Taiyuan on April 13. [Photo/pingyao.gov.cn]