Win7 Ultimate system does not install the word how to directly open the docx format file

1. If you do not have Office software installed on your computer, then we will find that the docx format file is recognized by the computer as Office Open XML;
2 Although Office is not installed, the system identification icon shows docx, and the pop-up prompt also shows that the document is recognized as an Office Open XML file;
3, then we directly double-click this file on the desktop, you can I saw that the docx format file was successfully opened and the display was complete, and the open form was opened in WordPad. Is it very simple?