Myeclipse cannot import an existing project

I downloaded a project from the Internet and placed it in the workspace of myeclipse. Using the import function of myeclipse, I want to import an existing projects into workspace, find the project in the workspace directory,

It is found that projects are empty. The project to be downloaded is compared with other local projects, and the project to be downloaded is missing. classpath ,. mymetadata ,. the three files of the project are copied from other projects, and then imported through myeclipse. This will find the project to be downloaded.