Qingming Ba is made of Qing cuisine, and Qing cuisine is green, so Qingming Ba is also green.

The legend of eating Qingming Ba in Qingming Festival is that after the "Jingnan Rebellion" by the Emperor Jianwen of Ming Dynasty, he fled from Nanjing to Guizhou Province, looked at the white clouds and disappeared. He cut his hair and became a monk in Baiyun Mountain of Changshun County, where he recited the scriptures and worshiped the Buddha all day. After the local people in Changshun learned that Emperor Jianwen had disappeared from Baiyun Mountain and cut his hair into a monk, people went up the mountain to worship Buddha on February 19 and June 19 of the lunar calendar every year. Every time they go to Baiyun Mountain to worship Buddha, the local people have to bring home-made cakes that everyone thinks are the best as sacrifices. Occasionally, after tasting the food cake brought by everyone, Emperor Jianwen was full of praise. Knowing that the main ingredient of this cake was Qing Ming cuisine, he named it "Qingming Ba". From then on, Qingming Ba became famous and became a necessary food for people to celebrate Tomb-Sweeping Day and worship their ancestors. Later, Qingming Ba spread to Anshun, Huaxi and other surrounding areas, and gradually became one of the favorite foods of the masses.

In fact, around the Qingming Festival, there was nothing to eat. At this time, some wild vegetables were mixed with rice flour to make Baba, and this time was the time when the Qing cuisine was fresh and tender, so more people chose Qing cuisine to make Baba, which gradually became a custom.