Why was Uhm Jung Hwa against Uhm Tae Woong joining "1N2D"?

It's been revealed that singer�Uhm Jung Hwa was originally against the idea of her brother,�Uhm Tae Woong, joining the cast of �"1 Night 2 Days". On April 23rd,�KBS's "Entertainment Relay" revealed interview footage from the siblings' CF set, where�Uhm Jung Hwa truthfully revealed that opposed her brother's decision to join '1N2D'. Her reason? She was worried that he might not fit in with the cast of professional comedians. Uhm Jung Hwa revealed, "Our family likes Uhm Tae Woong's corny jokes. However, I was afraid that the "1N2D" members wouldn't like them, and Tae Woong would end up being an outcast." But Tae Woong's sister had nothing to fear, since he adjusted well to the '1N2D' cast. Uhm Tae Woong expressed his gratitude towards Uhm Jung Hwa, and even showed tears. Laughing, he grew embarrassed and blamed his age for the tears. Hearing that, Uhm Jung Hwa yelled, "Don't talk about age in front of me!", making everyone on set laugh. Netizens commented, "They are such good siblings" and "I wish I had an older sister like Uhm Jung Hwa." Source + Picture: My Star News via Yahoo! Korea