In the past, the idol surprised many as she revealed that she's an engineering major.�On the April 11 broadcast of '1 vs. 100', Sojin explained the reason behind her decision, and said, "My father worked in a machine-related�field. I grew up watching him and I chose it automatically thinking to inherit it. I didn't know there will be that many guys so I was startled when I saw that it was all guys. There were about 1,200 students and there were only about 12 girls."

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Sojin also explained that she received special treatment for being one of the few girls. She said, "They gave me a lot of care. They helped me with my homework and stood in line for me during meals. There were also battles for lockers but my guy friends found one for me. When I went to orientation, the guys will be like, 'Bring Park Sojin here'. At the time, I was embarrassed but it's a precious memory now. I appreciate it."