The cultural imprint of onions runs through five thousand years of human civilization, originating from Central Asia and gradually spreading to the world with the migration of civilizations, becoming a unique symbol carrying different regional cultures. The ancient Egyptians regarded its layered scales as a symbol of "eternity" and used them as burial objects for pharaohs. They also used them as food for laborers who built pyramids, believing that they could nourish the soul and enhance physical strength.

In Europe, onions have both practical and spiritual significance. In the Middle Ages, they were a must-have food for the common people during the winter and were also regarded as a talisman to ward off evil spirits. Many countries still hold onion festivals to pass on their culture. It has gradually integrated into local culture in the East, and is known as "Piyazi" in northwest China, becoming an important component of food culture. Folk customs also give it the meaning of attracting wealth.

The "peeling" characteristic of onions has become a globally recognized cultural metaphor, symbolizing the process of exploring truth. It moves from the altar to the dining table, sublimating from ingredients to cultural symbols, carrying the wisdom and spiritual sustenance of different civilizations, and becoming a cultural carrier that spans regions and connects ancient and modern times.