Su Xing was displeased when criticized: "You only talk about me, but when you changed your major, such a big deal, you didn't tell mom and dad either."
Su Mo's major was originally Business Administration. After one month of classes, he found it uninteresting and switched to Medicine. Once he made the switch, he found it more interesting and challenging, and didn't change again.
Su Mo was slightly taken aback by his sister's words, and then softened his tone, "My changing a major is nothing compared to you joining the army. Being a soldier is really tough."
Su Xing knew her brother cared about her and didn't want her to suffer, but the problem was: "Brother, I really want to join the army. I'm eighteen now, I can decide my own life. When I go back on Saturday, I'll talk to mom and dad about it."
