In this aerial photo, tourists enjoy themselves in a verbena field in Gaopo Township of Guiyang, southwest China's Guizhou Province, June 17, 2023. [Photo/Xinhua] Tourists take photos in a verbena field in Gaopo Township of Guiyang, southwest China's Guizhou Province, June 17, 2023. [Photo/Xinhua] In this aerial photo, tourists enjoy themselves in a verbena field in Gaopo Township of Guiyang, southwest China's Guizhou Province, June 17, 2023. [Photo/Xinhua] In this aerial photo, tourists enjoy themselves in a verbena field in Gaopo Township of Guiyang, southwest China's Guizhou Province, June 17, 2023. [Photo/Xinhua] In this aerial photo, tourists enjoy themselves in a verbena field in Gaopo Township of Guiyang, southwest China's Guizhou Province, June 17, 2023. [Photo/Xinhua]