If you thought last week's 'Code #1' teaser, with Morse Code message was difficult, 2PM's latest teaser, 'Code #2' will make your brain explode.

Following 'Code #1's 'light and sound' theme, fans have been looking forward to the 'letters and numbers' concept of 'Code #2'.



The video contains the mysterious message: "Jabir_ibn_hayyan,  Heinrich_khunrath,  cornelius_agrippa" and "3.6.1, 149.26.6, 23.12.1, 166.9.5, 78.23.11." Fans are insanely curious about what the message could mean and its relation to 'Code #1'.

A few clicks on Google, and we learned that Jabir_ibn_hayyan, Heinrich_khunrath, and cornelius_agrippa are scientists/alchemist from the past. What and how they are related to the numbers is still a mystery.

Turn on your inner detective and check out 'Code #2' below. What do you think it means?