More than a month ago, after Zhu Baoguo was defeated by Shi Qing, he had made up his mind to hone his skills.
"Zhu Baoguo may be weak but he has abilities. You may look down on him, but that is because you haven't seen how he was like two years ago. Back then, if you have seen him, you probably wouldn't be willing to cast him another glance, let alone spar with him." Shi Qing was arrogant. For those whom she despised, she would not bother herself to talk to them or waste her time on them.
To put it bluntly, since Shi Qing was willing to use her fists on Zhu Baoguo at school, Shi Qing did not really dislike Zhu Baoguo.
If she found him to be an eyesore, she would not have mentioned him more than once to Qiao Nan. She would have already forgotten about him after punching him.