Sesame balls, also known as "Jian Dui" or "Ma Tuan," are a popular Chinese dessert made with glutinous rice flour filled with sweet paste or red bean paste, rolled in sesame seeds, and fried until crispy on the outside and chewy on the inside. They are commonly eaten during the Lunar New Year or other festive occasions and are said to bring good luck and fortune due to their round shape resembling coins. Sesame balls are a delicious and satisfying treat that can be enjoyed any time of the year.