Protect the confidentiality and security of training. China Bank is a large financial institution, whose business involves many fields such as finance, finance and law, and its training content is also very complex and sensitive. In order to protect the confidentiality and security of the training content, Bank of China adopted a closed training mode, that is, closed learning and training for trainees at a specific place and time, so as to prevent the training content from being leaked or threatened by other security.