Lol Akali 20 17 How to get the mysterious key of Mystery shop of akali in February?

Akali mystery shop's key was obtained by participating in the "Spring Festival Counterfeiting Award" activity. After winning 7 competitions or rankings, she will randomly choose one of the following four awards. The activity time is:1October 23rd1:0-1October 30th, 65438+23:59:59. Now it's over and she can't get it anymore.