Tourists visit the Longmen Grottoes in Luoyang, central China's Henan Province, April 5, 2023. People come outdoors for leisure and enjoy the beauty of spring during the Qingming festival, also known as Tomb-Sweeping Day, on Wednesday. (Photo by Zhang Yixi/Xinhua)

This aerial photo taken on April 5, 2023 shows people visiting Humble Administrator's Garden in Suzhou City, east China's Jiangsu Province. People come outdoors for leisure and enjoy the beauty of spring during the Qingming festival, also known as Tomb-Sweeping Day, on Wednesday. (Xinhua/Li Bo)

Children play among flowers in Yuechi County of Guang'an City, southwest China's Sichuan Province, April 5, 2023. People come outdoors for leisure and enjoy the beauty of spring during the Qingming festival, also known as Tomb-Sweeping Day, on Wednesday. (Photo by Zhang Qifu/Xinhua)

This aerial photo taken on April 5, 2023 shows tourists visiting Slender West Lake in Yangzhou, east China's Jiangsu Province. People come outdoors for leisure and enjoy the beauty of spring during the Qingming festival, also known as Tomb-Sweeping Day, on Wednesday. (Photo by Meng Delong/Xinhua)