Another example is that you want to recruit an R&D engineer. Your company is engaged in R&D of a certain kind of software, which generally requires the applicant's previous R&D platform and programming language to be the same as your company. Perhaps, some HR will say, how can HR know these too professional things? This is also one of the fundamental reasons why I have always advocated that HR must understand the business. If you don't understand the nature of the company's business, it is difficult to do a good job in HR, which has been reflected in the process of selecting resumes. Of course, if you just entered the company and have no technical background, you can ask the R&D department to give you some technical keywords, which can be done in the short term, but in the long run, if you want to work in HR in such a highly professional enterprise, you must have a deep understanding of the business nature of the company.