Taking language ability as an example, HR is understood as follows: ① Generally speaking, the level is not good; (2) Excellence means that you can barely communicate with modern tools; (3) Proficiency refers to the barrier-free communication without or with little help from modern tools in the case of non-professional description; (4) Proficiency refers to being able to correctly identify the language under the influence of various slang words, without affecting the communication effect because of the appearance of the other party's regionalized language.