In terms of China, there is also the great firewall which makes it difficult to access repos on Github. This is why you’ll find on Gitee (and gitea.com) many mirrors of repos from github. This is interesting, as in contrast to the US sanctions that prevent certain countries from access github/gitlab, this is the reverse where it is a country that prevents access to a remote property.
@dachary If you are interested in more discussions, Gitea’s founder is from CN, as well as we have many maintainers/contributors from there as well, and I can connect you with some.