The customs in beginning of autumn include pasting autumn fat, eating autumn and eating jiaozi. 1, iron autumn comes to early autumn, the weather gets cold, and the appetite is wide open. I wanted to eat something good, supplement some nutrition and make up for the loss in summer. On this day in beginning of autumn, people will have the custom of eating watermelon, which is called eating autumn. 3. Eating jiaozi in beginning of autumn is also called catching autumn fat.