This savoury version of tang yuan reminds me of home; my mother made them often, not just for reunion dinners. Chung choi are salted turnip greens. In supermarkets, they are sold in small bundles ...

so if you want to eat tang yuan, you will need to visit a restaurant or a Chinese dessert shop. Or make them at home. The glutinous rice flour balls have a chewy texture similar to mochi.