Lang Lieu and the Banh Chung

Every year, in the last days of the old year, families all across Vietnam gather together to wrap banh chung. A square cake, wrapped in green leaves, tied with bamboo string. But few people know that, according to legend, this cake once decided who would become king.

Long ago, the sixth Hung King had driven out the An invaders, and the kingdom was at peace. But the king was growing old. He had twenty sons. He wanted to pass on his throne — but he did not know which son to choose.

At the year-end ceremony for the ancestors, the king called his sons together and said:

Whoever brings an offering that pleases me, to honour our ancestors — to him I will give my throne.

The princes raced across the land — into the forests, out to sea — hunting for the rarest delicacies of the mountains and the oceans. Every one of them believed the same thing: the more precious the gift, the closer the throne.

Only one prince stood quietly outside the race: Lang Lieu, the eighteenth son. His mother had died when he was young. He had no riches. He worked the fields like a farmer — planting rice, growing sweet potatoes.

Night after night, he lay awake. He had no money for rare delicacies. What could he possibly offer his father?

Then one night, a god appeared to him in a dream.

In all of heaven and earth, nothing is more precious than rice. Rice keeps people alive — and no one ever tires of it. Take sticky rice and make two cakes, one round and one square, for the sky and for the earth.

Lang Lieu woke with joy. He chose the whitest, plumpest grains of sticky rice, and washed them clean.

For the filling, he used mung beans and pork. Then he wrapped everything in dong leaves from his garden, folding them into perfect squares.

He lit a fire, and boiled the cakes for a whole day and a whole night.

With the rest of the rice, he steamed it, pounded it smooth, and shaped it into round cakes, soft and white.

The day of the ceremony came. The princes presented their offerings — rare meats, exotic treasures from the mountains and the seas — piled high on every table. And Lang Lieu had only one simple tray: square cakes wrapped in green leaves, and round cakes as white as clouds. The king looked over every offering. Then he stopped — for a long time — in front of Lang Lieu’s tray.

He tasted the cake. Soft. Fragrant. Rich. He asked about it — and Lang Lieu told him of his dream.

The king was silent for a long time. Then he said:

The round cake is the sky. The square cake is the earth. The leaves wrap the filling inside, the way parents protect their children. These cakes are made of rice — the grain that feeds all our people. That is the most precious offering of all.

The king named the square cake banh chung, and the round cake banh giay. And Lang Lieu — the poorest prince — was given the throne. Not because of his wealth. But because he understood what his country truly valued most.

From then on, according to legend, every Tet, the Lunar New Year, Vietnamese families make banh chung and banh giay to offer to their ancestors. Even today, the night of boiling banh chung is one of the warmest nights of the year: the whole family stays up around the pot, talking, waiting for the new year.

In the South, people wrap banh tet — a long, round roll — but the meaning is the same: gratitude to heaven and earth, to the ancestors, and to rice.

A square cake and a round cake. The earth and the sky. And the story of a prince who chose the simplest gift of all.