Is there a difference between Chengdu Railway Group Company's recruitment examination and internal recruitment examination?

There is a difference between recruitment examination and internal recruitment in Chengdu Railway Group Company. The recruitment examination is a national unified and standardized examination with recruitment conditions. Only by passing the exam and interview can you be employed. Internal recruitment does not disclose conditions and number of people. Under special circumstances, you can go to work without an interview or an exam. There is no internal recruitment now, and the entry must be in compliance.