How was emperor qin protective to his people?

They believed that part of strengthening his rule was to force everyone to simply obey and not speak out against him and by decreeing even how people could write, what they could believe, and what they should do. He succeeded in molding the people to become more similar, to build massively, and to conquer  more territory, but people grew to hate him and he became paranoid about assassination and death, and his family and court ended in killings and death. 

I hope that helps you