Studying at Dankook University in the theater and film department was difficult for Hae Soo, as many young actors did not get into the industry right away. He had to work part-time in restaurants and other places to pay for his studies and support himself. It was a difficult period, but Hae Soo got through it without giving up. He Su also spent a lot of time studying, it was extremely important for him. He combined studying with work, which was very tiring for him.