http://mirror.as.kamatera.com/ubuntu/
http://www.ubuntu.org.tw/
https://mirror.xtom.com.hk/ubuntu/
http://mirror-hk.koddos.net/ubuntu/
http://hk.mirrors.thegigabit.com/ubuntu/
https://ubuntu.01link.hk/ubuntu/
http://ftp.cuhk.edu.hk/pub/Linux/ubuntu/
http://archive.ubuntu.com/ubuntu/