Choi Min Soo makes a special appearance as Lee Min Ho's teacher on 'Great Doctor' and showed his charisma.

On the 4th episode of the SBS Monday Tuesday drama 'Great Doctor' that aired on August 21st, Choi Min Su appeared as Moon Chi Hoo, the general of Jeokwoldae.

Choi Young(Lee Min Ho) told king Gongmin(Ryu Deok Hwan) the story of how he became a woodalchi. Choi Young was in a secret organization called Jeokwoldae, who had a heart for Goryeo. However, Choi Young saw the general of the group was killed by the king.

The king called Jeokwoldae to the palace, and Choi Young was joyful and excited in hopes that they would be commended for their works. However, the king's thoughts were different. As the king saw a female member of Jeokwoldae, he said, "this is the first time seeing a female soldier. Take off all of your clothes. I want to see. This is a command."

The female soldier had to do as she was told, and Jeokwol(Choi Min Soo) was trying to stop her. The king angrily said, "these people are more willful. The people of the nation trust them more than the king. Is it them who is protecting the nation, over the king? So you can disobey my commands?"

The king continued to tell her to take off her clothes, and Jeokwol was stabbed as he blocked her. Jeokwol stopped Choi Young who was angry and said, "follow the king's commands. That's how all of us will live."

This is how Choi Young became the escort soldier, Woodalchi. King Gongmin did not know what to do, because those were the tragedies that the previous king who was his older brother caused. Choi Min Soo appeared in only one episode as a Jeokwol and showed his charisma.