![](http://www.ecns.cn/hd/2020/04/01/759d7143f225413480b7cfb833cdb296.jpg)
Local residents queue to buy qingtuan at a shop in Shanghai, April 1, 2020. Days before the Chinese Qingming Festival, which falls on Saturday, many people in Shanghai waited in line for hours to have a bite of a century-old snack. Qingtuan, a sweet green rice ball, is a must-have offering for the ancestral rituals of Qingming Festival in the Yangtze River region. (Photo: China News Aervice/ Tang Yanjun)
![](http://www.ecns.cn/hd/2020/04/01/280ca1b3a8e840d1bf1211f8794922db.jpg)
A chef makes qingtuan at a shop in Shanghai, April 1, 2020. Days before the Chinese Qingming Festival, which falls on Saturday, many people in Shanghai waited in line for hours to have a bite of a century-old snack. Qingtuan, a sweet green rice ball, is a must-have offering for the ancestral rituals of Qingming Festival in the Yangtze River region. (Photo: China News Aervice/ Tang Yanjun)
![](http://www.ecns.cn/hd/2020/04/01/c6c38527f0b04ab59640445c95063f3e.jpg)
Local residents queue to buy qingtuan at a shop in Shanghai, April 1, 2020. Days before the Chinese Qingming Festival, which falls on Saturday, many people in Shanghai waited in line for hours to have a bite of a century-old snack. Qingtuan, a sweet green rice ball, is a must-have offering for the ancestral rituals of Qingming Festival in the Yangtze River region. (Photo: China News Aervice/ Tang Yanjun)
![](http://www.ecns.cn/hd/2020/04/01/1d06d00824e348dcb7682d982f52a99a.jpg)
A worker arranges qingtuan at a shop in Shanghai, April 1, 2020. Days before the Chinese Qingming Festival, which falls on Saturday, many people in Shanghai waited in line for hours to have a bite of a century-old snack. Qingtuan, a sweet green rice ball, is a must-have offering for the ancestral rituals of Qingming Festival in the Yangtze River region. (Photo: China News Aervice/ Tang Yanjun)