The key to sales is to fulfill the needs of the customer. Solving a technical problem for a customer, reducing the hassle of a process for a customer, meeting a customer's financial needs, and making the customer feel good about themselves are all part of meeting a customer's needs.
The anonymous user is right, if you are facing a customer whose main need is to "come to work" and "drink", then successful sales can only go to these areas. Other friends persuade you to go to the foreign enterprise sales is also the same reason. As our country will be in the primary stage of socialism for a long time, the needs of customers tend to be relatively primary. Since you can use English to gain some competitiveness, don't compete with the rest.
1. Don't worry too much about the field, a good field doesn't mean a good company, and a good company doesn't mean you're good. Biology program used to be good for everyone, and what happened.
2. You need to be clear about what you mean by sales. The best place to sell is anywhere you can get your hands on. If you refer to Marketing, it is the north and the two places.
3. Johnson & Johnson Roche has been recruiting, the school recruitment is only a fairly small part. The sooner you get in, the better.
4. A person who does not learn new things, no matter what industry is eating youthful rice. I've never watched any serious sales get older and fail.