(Why build a personal brand? One thing we need to understand is that personal branding is effective communication. Once your personal brand is established, you will find that customers can easily trust you, which invisibly improves transaction efficiency. Because we affirm the value of a person or a thing, in addition to carrying the actual ability product, it will also carry virtual cognition. In other words, you must not only have strength, but also have a label to let others see your strength.)