During the Sui (581-618) and Tang (618-907) dynasties, the custom of eating zongzi became a nationwide tradition passed down through generations. Today, there is an international standard specifying what a zongzi is. It is briefly defined as "cooked rice wrapped in plant leaves," but the full standard goes into more detail. CGTN's Zhu Luoman explores how this traditional Chinese food is being modernized to reach more people abroad.