The members of Little Overlord were basically from the Business and Trade School, including Huang Xiaobo himself.
Huang Xiaobo himself was also a junior at the Business and Trade School. This guy should have graduated already, but he failed to meet the grade requirements, so he had to repeat a year and continue to make up credits. As long as he lacked enough credits, he would have to keep repeating the year. However, for Huang Xiaobo, none of that mattered anymore. He wasn't here to study for a diploma, but to have a foothold where he could recruit underlings and make money. That was Huang Xiaobo's true goal.
"Big Brother!" a few of his underlings found Huang Xiaobo.