Need some help for mirrorlist in China

Hi Mirror Admin team, Recently, when I am checking the mirror lists in China, I see there is only mirrors.njupt.edu.cn listed for the repo fedora-28[1]. And Checking the corresponding Fedora 27 one, I only see mirrors.tuna.tsinghua.edu.cn mirrors.163.com mirrors.njupt.edu.cn For fedora-updates of Fedora 28[2], still only the above three mirror listed. While for fedora-updates of Fedora 27, only the two listed mirrors.163.com mirrors.njupt.edu.cn According to my knowledge, the three biggest mirrors in China are mirrors.tuna.tsinghua.edu.cn[3] (mentioned as TUNA below) mirrors.ustc.edu.cn[4] (mentioned as USTC below) mirrors.163.com However USTC is not listed in any of the above. And TUNA is listed only on the Fedora-27 repo. Given both of them are pretty big and still listed on mirror page[5], can you check why they are not listed by metalink? Especially TUNA has the biggest bandwith and USTC has connection to every ISP in China. I am copying their staff list as well. Thanks in advance for your help! [1] https://mirrors.fedoraproject.org/metalink?repo=fedora-28&arch=x86_64... [2] https://mirrors.fedoraproject.org/metalink?repo=updates-released-f28&... [3] https://mirrors.tuna.tsinghua.edu.cn/fedora/ [4] http://mirrors.ustc.edu.cn/fedora/releases/28/ [5] https://admin.fedoraproject.org/mirrormanager/mirrors/Fedora/28 -- Ziqian SUN (Zamir) zsun(a)fedoraproject.org GPG : 1D86 6D4A 49CE 4BBD 72CF FCF5 D856 6E11 F2A0 525E Want to know more about Fedora? Visit https://fedoraproject.org/wiki/