The girls had been on the rise a few hours ago, and now they've finally scored an all-kill on 8 of Korea's charts, including Mnet, Bugs, Olleh, Soribada, and Naver. After the girls scored the all-kill, they uploaded a letter to the company employees that they wrote by hand.

SEE ALSO: 4minute scores #1 on various music charts with 'Whacha Doin' Today?'

A message has arrived to all the CUBE employees.

Hello, everyone at Cube. It's 4minute. Thank you so much for working so hard day and night as this album came out. I think this album where everyone worked hard is 4minute's best. Thank you for doing the best at your jobs. Please do your best in everything that you've taken responsibility for! We'll be even more thankful then! We're going to work hard on promotions as well, so let's all work hard to make a 4minute world!