Each has its advantages and disadvantages. There are more practical operations in offline learning. The online school has free time and the exam is relatively simple. Ministry of Human Resources and Social Security National Training Network and China Service Trade Fair provide training and examination services. Visit Ministry of Human Resources and Social Security, People's Republic of China, and find "China National Personnel Training Network" in the subordinate website at the bottom of the website; Visit Guo Pei. Com, click on the "post ability improvement training platform" on the right, and click on the "new retail" column of course classification to see all courses.