Enter the knowledge tree online learning page, click on the upper right corner to return to the old version, and then follow the following process to continue learning again. Please note that the new version of the knowledge tree does not have a "Back to Old Version" button.

The wisdom tree is a large-scale credit course operation service platform in the world. Online education platform has a large number of high-quality courses in colleges and universities, and online education perfectly supports cross-school teaching, credit certification and famous schools.