用户1340774522 :Teaching Open Source Software in North Korea https://izbicki.me/blog/teaching-open-source-in-north-korea.html

> Graduate students in North Korea have unfiltered internet access, and the student had used this access to download the mlpack machine learning library in order to implement their vehicle detection system[...]

Meanwhile in China:
> curl: (35) OpenSSL SSL_connect: Connection reset by peer in connection to github.com:443   2021-06-27 14:50:54  举报 收藏 操作