This institution is very wealthy.
Even the lowest-level staff, as long as they are within the staffing, it's not surprising that they receive a hundred thousand in bonus at the end of the year. The reason that the staff do not receive million-level highest salaries is only due to the unique characteristics of the unit that do not allow such high wages.
The Biomedical Research Institute's projects are all allocated from the top, they have to apply for funding for each project, and each expense needs a corresponding report.
Even if there are some idle funds in the research institute, they are basically all attached with various fund titles.