Fedora Yum source.

http://mirrors.fedoraproject.org/

For China, the following are fast by my test.
U can test by urself. hehe

http://fedora.candishosting.com.cn/pub/fedora/linux
http://opensource.nchc.org.tw/fedora/linux
http://free.nchc.org.tw/fedora/linux/
http://ftp.twaren.net/Linux/Fedora/linux/

How to Make Ur Own Mirror
http://fedoraproject.org/wiki/Infrastructure/Mirroring