Painting on the buffalos is an ancient custom in Jiancheng. According to legend, a villager once saw his water buffalo getting attacked by a tiger. As the creatures rolled around on the field, mud and blood covered the buffalo's body. The bull looked so terrifying that the tiger got scared and ran away. After that locals started painting on their cattle to keep the predators away. The tradition developed into a popular festival held each year to celebrate harvest and honor the cattle.