Qingtuan is a special type of food that comes from China. It's made of a dough that's made from rice flour and mashed up kidney beans. The dough is green because it has Chinese mugwort in it, which gives it its special color.
Once the dough is made, it's wrapped around a sweet filling, which is usually made of red bean paste or sometimes sesame paste. Then the qingtuan is shaped like a ball and steamed until it's cooked.
People in China usually eat qingtuan during the Qingming Festival, which is a traditional holiday that happens in April. It's a time for people to remember and pay respects to their ancestors who have passed away.
Some people also like to eat qingtuan as a tasty snack all year round!