Nam Tae Hyun introduced his younger brother, Nam Dong Hyun — who is also the bassist of his band South Club — to Jang Do Yeon.

Jang Do-yeon, Nam Tae-hyeon and Nam Dong-hyun restored the relationship of brother and showed the first-born force properly. 

On the 9th broadcast tvN 'Sad Sudon Practice', the figure of Jang Do-yeon who met Nam Tae-hyun's brother Nam Dong- hyun

"Before I met Nam Dong-hyun, I was worried about age difference," and "I am worried about why I'm having a bad time." 

Nam Tae-hyun was amazed by the answer to Jang Do-yeon's question about his relationship with his younger brother. Nam Tae-hyun said, "I see only a couple of times in a year, but I am awkward because I am a family member." 

"What I hate most is me," he added. 

Soon Nam Tae-hyun's brother Nam Dong-hyun came to the house. Nam Dong - hyun has prepared flowers for Jang Do - yeon, and Jang Do - yeon is moved to enter the kitchen to take a refreshment. 

Brothers Nam Tae-hyun and Nam Dong-hyun left a short conversation but did not show intimate relationships. Even though Jang Do - yeon, who is not a better person, made various efforts for the relationship between the two people, the two were rarely approached. 

While Nam Tae-hyun was away for a while, Nam Dong-hyun told Jang Do-yeon about his troubles. He was always active, but he was worried about his brother when he was broadcasting, so he could not show himself properly. Nam Tae-hyeon said, "I am a little Spartan, I do not like to hate, I want to lead a good way"

Jang Do-yeon expressed his desire to get close to each other and encouraged intimate conversation with two people through the game "I did it". 

Nam Tae-hyun and Nam Dong-hyun broke up with the situation that they should have a skin-care relationship, but Jang Do-yeon led the game. At first, I only wanted to get along with each other, but Nam Tae-hyun gave me praise, saying, "I just want to do this." Nam Dong-hyun also said, "I really know your mind." 

Nam Tae-hyun's mom, who was looking at the screen, said, "I think Jang Do-yeon is smart and wise." Jang Do-yeon also expressed his gratitude that he "would be praised by his mother." 

The three people, after reviewing their family photos of Nam Tae-hyun and Nam Dong-hyun, took pictures of family members and boasted a lot more. 

On the same day, on the same day, Jang Do-yeon-Nam Taekwisun and other tourists in the Gyeongri-Austin River, who challenged self-wedding photography with Gwon Hyuck-soo, lost.