WORK

Working is the primary way that a new player will make money. As a new player, you will only be able to work in gold factories until you reach level 60, where working different types of resources are open to you. Working in gold factories will give you cash and gold. To work, click on the Work tab, and select the factory you would like to work in by pressing the green Work button near the bottom of the screen. Press the blue Work button, and you’ll use Energy (see [6]) to work in the factory, in exchange for cash and gold. Choosing the right factory is extremely important. When you search for a factory, keep in mind two things. The factory level and the wage. The higher the factory level (50 in the example), the more money/resources you’ll get when you work. The higher the wage, the more you’ll make (80% in the example). The rest of the wage (20% in the example) goes to the owner of the factory. Keep in mind that if your wage is set to 0%, or $0, you’ll make nothing. It is recommended that you work in factories that are higher than level 150, and give at least a 90% wage. The higher the factory level and the wage, the better!

List of all factory in game : http://rivalregions.com/#factory/search , you can check can choose the factory you want to work there are more than 6,500