You can't set up a stall outside Guangzhou Zoo. There are often urban management here to check the work, and whoever finds a stall will be driven away. Because the zoo is a special place set up to protect the ecological environment of animals, it is against the regulations to sell balloons at the gate of the zoo. In addition, selling balloons in front of the zoo may also affect the normal life of animals, because the noise of balloons will disturb animals, affect their rest and even lead to animal diseases.