The NJStar Chinese WP is just a Word Processor. I have checked every possible setting and menu to find out about password, but couldn't find anything related to this topic. The application allows you to open documents in order to edit them. However, the NJX format is said to have capabilities related to password protection, but the software doesn't offer a way to assign or change the password. No tool is developed to remove or replace the password for NJX files.