The working environment of milk tea shop assistants is usually busy, and they need to stand for a long time and process orders quickly. They need to make milk tea, cashier, clean the store and so on, and may need to meet the needs of a large number of customers during peak hours. Moreover, the milk tea clerk also needs to maintain a good service attitude and communicate with customers. These job requirements require not only physical strength, but also patience and care. Therefore, the work of the milk tea clerk is rather tiring.