First, I need to point out what is a positive teacher-student relationship in my mind: teachers can teach students through their "influence" and "guide" instead of directly telling them what is right and just push them to follow. I think the point is teachers should lead students to find their own way to build skills, and students can also see teachers as their friends to trust and learn from.
But the reality is, in Chinese schools most teachers often take the absolute control in the teacher-student relationship, they are severe and take the grades as their first priority. I feel they don't care much about how the kids grow as a man or woman, but focus on if they can grow in a conventionally right way.
I think to form a good teacher-student relationship is not a people thing, but also a system thing. Only can the system generate qualified teachers, positive teacher-student relationships will be formed.