Unable to fq, nor vpn, suggest that newcomers do not have to install sdk manager, direct download bundle package, you will not have to toss a variety of development environments. Recommended bundle Download: http://adt.android-studio.org/ , you can download the corresponding version, and then sdk environment variable configuration can refer to: https://jingyan.baidu.com/article/e52e36151a4e2740c70c5150.html .