Yoon Hoo is going through puberty. 

On the February 27 airing of MBC's 'Radio Star,' singer Yoon Min Soo gave an update on his son, who became a baby celebrity after appearing on the travel variety show 'Dad, Where Are We Going?' back in 2013.  

Yoon Min Soo said, "Yoon Hoo is now 14 years old. He has hit puberty and is starting to not listen." 

MC Kim Gu Ra commented, "How about letting him watch 'Dad, Where Are We Going?" Yoon Min Soo replied, "He hates it. He asks why his voice sounded like that back then, while I get teary just thinking about the past times."