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Acai Gum Cake is a food product made from Colla Corii Asini (Colla Corii Asini), black sesame seeds, walnuts, rock sugar, and yellow wine. It is recorded in Zhou Li - Kaogong Ji - Bowman: "Deer Gum is green and white, Horse Gum is red and white, Cow Gum is fire and red, Rat Gum is black, Fish Gum is bait, and Rhinoceros Gum is yellow."

Zheng Xuan note: "are said to be boiled with its skin or with the horn." As early as in the Zhou Dynasty, people on the animal skin glue has a more detailed study and classification, and at that time, cowhide is not as the preferred raw material, donkey skin, deerskin instead favored.

Gum is named after Dong'a, where it was first produced. China's earliest surviving pharmacological monograph "Shennong Ben Cao Jing" will be listed as "top quality", the Ming Dynasty Li Shizhen wrote "Compendium of Materia Medica", "Colla Corii Asini this by the top. Hongjing said: out of Dong'a, so the name Colla Corii Asini". According to historical records, Li Shizhen was born in 1518 and died in 1593.

There is also an old folk song circulating in Dong'a, "small black donkey, white belly, powder nose, powder eyes, powder hooves, lion's ear mountain to chew grass, Langxi River to drink, Yongji Bridge walk three times, Wei family field to make a roll, to winter slaughter to take its skin, glue still have to yin and yang water." In the process of making rubber, the use of gold pots and silver shovels, burning mulberry wood chopped wood, simmering seventy-seven forty-nine days, before becoming rubber.