The blog said, "At the time, she was 12 years old and in the 5th grade.  Not only was her face really pretty but her body proportions were so long even at a young age that I thought she was a very unique child."  In the photos, Krystal indeed boasts a very pretty and youthful demeanor as well as a thin, tall figure.  

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According to the blog post, Krystal was very bashful and quiet, but she joked on set, saying, "My name is Jung Soo Jung so even backwards, it's still Jung Soo Jung."

The netizen wrote, "Later in 2009, when she debuted as f(x)'s Krystal, I did not recognize her at all.  I found out much later just last year and was very surprised.  I hope she keeps succeeding through good activities~"

Netizens who viewed these pictures and writing and showed their pleasant surprise at her appearance.