First, Xigong University should book in advance, and the teachers are experienced. Science is better than liberal arts. Disadvantages: no accommodation is provided. Students choose according to their own situation.
Xi Anfang is also good, with two tutoring points, Zhongjiacun and Jiaotong University. Recommend Zhongjia Village. Although the facilities in Zhongjia Village are simple, the teachers are stronger than those in the south campus. Strict management.
Third, Longmen tutoring is in Xi 'an. The teacher is good, but the students are weak.