Not a merged school. Shenzhen Institute of Technology is a branch of Harbin Institute of Technology. Teachers and some laboratories were moved to the headquarters intact. Diploma is no different from headquarters, which is equivalent to the second school district of graduate school. As far as I know, most of them are professional masters, but there is no difference between professional masters and academic masters in polytechnic university, and there is no difference in academic system. Many of our classmates prefer to go to Shenzhen, where the environment is very good.
As for why the score is low, first of all, the professional master's score is lower than the academic master's score, and another is also a misunderstanding of everyone, thinking that the branch school is not as good as the headquarters.
I hope this helps.