团子 in modern Mainland usage usually refers to Japanese dango (
団子) — small rice-flour balls skewered three or four to a stick, sometimes glazed with sweet soy (mitarashi) or topped with anko. The cherry-blossom-pink/white/green hanami-dango set is the iconic image. For traditional Chinese sticky-rice balls,
汤圆 (tāngyuán) and
糍粑 (cíbā) are more common.