Mirrors:

http://luckyshare.net/7245176278/KHHardStudy.part1.rar
http://luckyshare.net/9404135004/KHHardStudy.part2.rar
http://luckyshare.net/7345944548/KHHardStudy.part3.rar
http://luckyshare.net/4392204426/KHHardStudy_set140.zip