Girls' Generation's youngest member Seohyun challenges members to speak in casual language in the 20th year since debut

Seohyun (Girls' Generation) teased the familiar speaking challenge. Seohyun, Kyung Suzyn, and Jeong Ji So appeared as guests on tvN's "Surprising Saturday" episode 36, which aired on the 26th.
Seohyun said that he recently met with the Girls' Generation members one by one to take on the "dojo challenge," and added, "I've decided to talk to them in casual terms. It's my 20th year."
He also explained, "The last time we met, Yuri-nee-san asked me to speak to her in casual terms. That's how it started. After that, we met face to face and I wondered, 'What should I do?'"
Seohyun started the challenge of speaking casually to Shin Dong-yup, the oldest member of the show, and said, "Nice to meet you, Shin senior," drawing laughter.
Seohyun, who had gained momentum, tried to talk to Tae Yeon in a casual manner. Tae Yeon replied, "We've been meeting for years,
So I have to take it easy," he confessed, to which Seohyun replied with a cutesy tone, "I understand."