Electronic commerce. Online courses are online courses that are learned by electronic devices through the Internet. If you want to apply for online courses at the age of 40, but you can't apply for a college diploma, then you can choose e-commerce courses. This course does not limit your academic qualifications. As long as you are willing to study, you can study. Shanxi, referred to as "Jin" for short, is the provincial administrative region of People's Republic of China (PRC) (China), with Taiyuan, the provincial capital, located in North China of China and bordering Hebei in the east.