tvN's "You Quiz on the Block" will broadcast its 349th episode today (the 24th) at 8:45 PM, featuring a special theme of "True Education." In this episode, guests from various fields will share moments of "true education" they have experienced in their own lives.

■ Kim Mu-yeol: From "True Education" Na Hwa-jin Behind-the-Scenes to Love Story with Wife Yoon Seung-ah

Actor Kim Mu-yeol will share behind-the-scenes stories from playing the role of Na Hwa-jin in the drama "True Education." He will also reveal his experience of earning only 200,000 won in annual income during his unknown days, as well as his love story with his wife Yoon Seung-ah.

He will also share his thoughts on the drama ranking No. 1 globally in 45 countries and entering the Top 10 in 91 countries within a week of its release. In addition, he will recount various episodes, including surpassing one million SNS followers, reactions that he resembles professional wrestler John Cena, and a shoutout he received from actress Kim Hye-soo. He will also mention his connection with Heo Nam-jun, their fitness competition, daily life with his son Won, and his experience singing congratulatory songs over 100 times.

■ Seoul Detention Center Prison Guards' Vivid Testimony from Extreme Frontlines

Kim Ji-hoon and Lee Dong-yeol, CRPT prison guards from the Mobile Patrol Team at Seoul Detention Center, will discuss extreme situations such as self-harm by inmates and the throwing of feces, the reality of managing hundreds of individuals per person, martial arts training processes, and malicious complaints. The tense on-site situations they experience at Seoul Detention Center, which houses approximately 3,000 inmates, will also be revealed.

■ Special Military Chemistry of Four Siblings Serving as NCOs in the Army, Navy, and Air Force

The four sibling noncommissioned officers — Kim Moon-jung, Kim Moon-so, Kim Tae-hee, and Kim Jun-won — will share the story of how they are all currently serving in the military, their father's encouragement, and their respect for their grandfather, a Vietnam War veteran. They will discuss the realistic chemistry among the siblings during their military service and family stories. The youngest, Kim Jun-won, will reveal that he blocked all of his sisters' SNS accounts and that his dream is to receive a salute from his sisters, bringing laughter to the show.

■ "Third Life" Child Lee Yu-ju: Behind-the-Scenes of the Viral 5-Second Interview

Lee Yu-ju, known as being in her "third life," will share behind-the-scenes stories from her Children's Day 5-second interview and surprising revelations from her mother. Her habit of reading 20 books a day, her talent for composing music, her taste for enjoying AKMU's music, and her experience of unrequited love that triggered Yoo Jae-suk's deep immersion will also be revealed. Special language education tips shared by her mother will also be presented.

"You Quiz on the Block" airs every Wednesday at 8:45 PM on tvN.