The high pressure and low pressure of the milk tea cup belt mean that if the milk tea makeup inside the milk tea cup bag is very full, the gas inside indicates that the pressure inside the milk tea cup bag is very high, which is easy to break during transportation. If the milk tea cup bag is not much, and the seven stickers inside are very few, the pressure of the milk tea cup is very low, which is not easy to break, and it is more suitable for transportation