Doing sales generally requires eloquence, but all sales are started from scratch, so don't worry about it without experience. No matter what kind of product you sell, you must know the function of the product so that you can introduce it to your customers. Of course, at the beginning, no one knew the product very well. After they start doing it, they should learn more and do more, and learn it as soon as possible. For example, mobile phone sales, if a new mobile phone is basically displayed with a prototype, you can try it yourself and learn more. Many stores even have pre-sales training before the new products go on the market, so you don't have to worry too much. As long as you work hard and are willing to learn, it is certainly possible.