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Doudun, also called "Sweeping Dun", is a traditional folk Chinese New Year custom in Leizhou Peninsula, Guangdong Province, which falls on the 24th or 25th day of the first lunar month every year.

During the festival, all parts of Leizhou Peninsula are cleaned, and every household carries out indoor cleaning, and makes every effort to clean classrooms, roofs, walls, doors and windows to greet the New Year neatly.

On the 24th or 25th of the twelfth lunar month, there is a general cleaning in Leizhou Peninsula, commonly known as "hoarding" or "sweeping hoarding". Every household carries out indoor cleaning, and makes every effort to clean classrooms, roofs, walls, doors and windows to greet the New Year cleanly. The incense burner was also washed once with tea and replaced with ashes. At dusk, the local countryside follows the old rule of "Farewell to the Kitchen God". When people (men only) who sacrifice to the stove go to the stove room, they respectfully incense and put two pieces of yellow sugar and some small gifts. This is because Leizhou people believe that the kitchen god is not greedy for gifts, and yellow sugar is to be the dessert in the mouth of the kitchen god, so we should tell the Jade Emperor more about this family.