Wednesday, November 28, 2018 
Comedian Shim Jin Hwa was the acting teacher in DSP Media.
On November 28, Shim Jin Hwa, So Yoo Jin, Hong Kyung Min, and Kim Poong guested on MBC's 'Radio Star.'
During the talk show, Shim Jin Hwa surprised all by revealing, "I was the acting teacher in DSP. I'm a comedian but the agency happily accepted me, so I was the acting teacher there for about 3 years."
She continued, "I taught KARA, Rainbow, and everyone. I held lessons 10 hours a day," and shared, "I taught them how to react on variety shows. I told them to laugh right away on 'Star King' when Kang Ho Dong sunbaenim finishes his sentence. I told them to use their facial muscle as much as possible."
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DSP media should have worked harder to better support Rainbow and Kara... I am STILL PISSED about Rainbow not being more known and successful. Most underrated group ever.