1, the first secret: many companies famous for development are actually applying templates to change programs. When customers have needs, most of them will ask software companies to develop them themselves; However, many software development companies in the market will only make verbal promises.

2, too many, the jewelry industry is the most secretive industry, not only selling goods, but also jewelry processing. For example, baking jewelry is allowed.

Moreover, there is no industry in the world where people don't have girlfriends, and only people without money don't have girlfriends. Teachers don't correct homework in winter and summer vacations. The teacher is unwilling to assign more homework and can't finish it. So a lot of homework is not changed, or only part of it is changed. Of course, some of them were changed by the squad leader or group leader.