集賢殿
It soon becomes known that the king, with the help of So-yi and the Hall of Worthies scholars, has been working for years on a secret project, which turns out to be the creation of the Korean alphabet. While tracking Hidden Root, Kang Chae-yoon and So-yi each realizes who the other really is - Ddol-bok and Dam. Realizing that each other are the ones who they were dying to find, So-yi begins to speak. So-yi shows Chae-yoon the alphabet and describes how it will give more power to commoners. Chae-yoon is amazed with the simplicity of the alphabet and is convinced to work with the king instead of killing him.