At about 7:00 am on April 28, the bureau of Guiyang City, Guizhou Province, experienced frontal fog. When standing in a high-rise building, the buildings were looming, and the air of immortality floated like "fog" into the fairyland. Zhao Jie, chief forecaster and senior engineer of Guiyang Meteorological Observatory, said that frontal fog mostly occurs in winter, and the probability of beautiful frontal fog in later spring is low. The picture shows frontal fog at the junction of Qiannan Prefecture and Guiyang City. (Picture/Shi Kui)