Yewon endured criticisms from Lee Soo Geun and Boom while sawing. 
On the February 4th airing of “Invincible Youth 2″, Jewelry of Yewon was selected from the G8 (eight girls including Hyo Yeon and Sunny of SNSD,Yewon of Jewelry, Bora of Sistar, Suzy of Miss A, Kang Jiyoung of Kara, Ko Woori of Rainbow, Amber of Fx) to chop firewood. 
Yewon hiked up the mountains along with Lee Soo-Geun, Boom, and Ji Hyunwoo in search for firewood. She attempted to saw under Lee Soo-Geun’s directions but struggled with the task.Though it was her first time, Lee Soo-Geun did not cut her any slack.
He criticised her severly commenting on her awkward posture and even Boom piped in to express his dissatisfaction with her work. But Yewon kept at her best and followed through with the instructions.  

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