The moral of glutinous rice balls symbolizes a happy family reunion. Eating glutinous rice balls means family happiness in the new year, and also expresses people's yearning and expectation for a happy life. According to legend, glutinous rice balls originated in the Song Dynasty, when a novel food appeared in Mingzhou, that is, black sesame seeds and pig's suet were filled with a little sugar and kneaded into round glutinous rice flour. When cooked, it tastes sweet, soft and delicious, with endless aftertaste.