The best way to answer this question is to explain from your own situation that you are interested in this job, like and good at dealing with some unique affairs of tea shops, and hope to make use of your experience to contribute to the shop. At the same time, you can also express some expectations for your work, so that you can learn new skills and knowledge here and play a positive role.
Tea shop refers to a facility or public restaurant that provides catering services such as milk tea and drinks to the general public in a certain place.