First of all, working in these places has little to do with your major. Of course, if you are a non-professional, those theories are unfamiliar at first, but the process will not last more than a week (there is no way to learn). Then, if you want to be a salesman, it is directly customer-oriented. In essence, whether you sell electronic products, provide some services, or introduce financial products, there is not much difference, just talking about the performance of products and services. Various characteristics, cost performance or ... as for students who think you are good at analyzing people's personality, it is estimated that the landlord is introverted and has poor communication. Personally, I think the trade fair is more suitable. Note: there are many things needed for trading. If you choose to trade, your life will fluctuate greatly and you will have nothing at any time.