In response to your question, the training you mentioned obviously refers to short-term training, the basic purpose of which is to be quick, but the circuit theory needs a systematic learning process, and the basic courses need to be patiently studied for several years. So how to achieve it through short-term training? If you are not a college student majoring in communication microelectronics and other related majors, it is impossible for you to do circuits by such rapid short-term training after leaving school, because you don't have the time and energy. Even students of related majors should keep learning when they come to the company. It was difficult at first. They had to increase their experience and knowledge by doing projects. It's not like doing web pages or anything, it's just training.