【正确答案】What we learnt in primary school and high school is elementary knowledge.Additionally,the knowledge taught in university for four years is superficial. People call the study in university as high education,it seems that it is the end of education,that is totally wrong. The study in university actually is the very begining of learning knowledge, What we study here is superficial,the key point is the method of study and practice. Learning is endless, lifetime for study is short,so the ancients keep studying even when they were every old! however, it really had fun in this kind or research.