Allium chinense is an edible species of Allium, native to China, and cultivated in many other countries. Its close relatives include the onion, scallion, leek, chive, and garlic.

Tết, short for Tết Nguyên Đán, is the most important celebration in Vietnamese culture. Tết celebrates the arrival of spring based on the Vietnamese calendar and usually has the date in January or February in the Gregorian calendar.