For Taiwanese singer, Yoga Lin, who is one of the judges of 'Youth With You' with Lisa, he thought Lisa was still in her teenage years due to her youthful appearance. And to be honest, anyone would have been inclined to think that Lisa was in her late teens, because she seriously does look a lot younger than her age.
Lisa actually couldn't help but burst out laughing with the rest of the other judges when she heard that Yoga Lin assumed she was about sixteen years old.
Yoga Lin then asked Lisa how old she thought he was.
You can check out the video clip below for Lisa's answer.