The second reason is that at the beginning of spring, when spring returned to the earth, everything revived and all kinds of vegetables sprouted, so people tried it very early. The ancients wrapped seasonal vegetables in dough, rolled them into rolls, steamed or fried, and named them spring cakes, which meant a bumper harvest.
Eating spring cakes on this day is a traditional custom in beginning of spring to celebrate the arrival of spring. As early as the Jin Dynasty, it was recorded that (Tang people) made spring cakes in spring and wrapped them with Artemisia annua, leeks and Polygonum hydropiper buds.