Selling balloons is not illegal in itself, but buying and selling balloons in public places may violate the city management regulations and may be illegal. No one is allowed to set up a stall in a public place.
For buildings or facilities that do not meet the standards of city appearance and environmental sanitation, the administrative department of city appearance and environmental sanitation of the people's government of the city shall, jointly with the administrative department of city planning, order the relevant units and individuals to renovate or dismantle them within a time limit.