The readme.md has been blocked, translation for 根据相关法律政策,该内容无法显示 is "According to relevant laws and policies, the content cannot be displayed".
You can still get content by `git clone`, but you can never get it in web page (including https://gitee.com/gsls200808/chinese-opensource-mirror-site/...).
By the way, unlinke github, you cannot do any useful things though the web interface without a verified account(even clone through git protocol has been limited to the verified account).
This sounds like a very common thing in China, but it is incredible that censorship appears on open source platforms.