Tourists enjoy themselves at a park in Lianyungang, east China's Jiangsu Province, May 19, 2025. This year's May 19 marks the 15th China Tourism Day. (Photo by Wang Jianmin/Xinhua)

　　People visit the imperial Xiaoling Mausoleum, the burial site of the Ming Dynasty's (1368-1644) founding emperor Zhu Yuanzhang, in Nanjing, east China's Jiangsu Province, May 19, 2025. This year's May 19 marks the 15th China Tourism Day. (Photo by Su Yang/Xinhua)

　　Tourists enjoy flowers at a park in Zaozhuang, east China's Shandong Province, May 19, 2025. This year's May 19 marks the 15th China Tourism Day. (Photo by Sun Zhongzhe/Xinhua)

　　Tourists enjoy themselves at the Zhengding ancient city in Shijiazhuang, north China's Hebei Province, May 19, 2025. This year's May 19 marks the 15th China Tourism Day. (Photo by Chen Qibao/Xinhua)

　　People visit the Baotu Spring in Jinan, east China's Shandong Province, May 19, 2025. This year's May 19 marks the 15th China Tourism Day. (Photo by Xu Zhou/Xinhua)