Xi'an is one of the most important higher education bases in China, and it is also a city with a cluster of scientific research institutions. It has more than 30 national public first-class universities such as Xi'an Jiaotong University, Northwestern Polytechnical University, Xidian University, Northwest University, more than 40 nationally renowned private colleges, and more than 100 national key scientific research institutes; at the same time, it has world-famous tourism resources such as Terracotta Warriors, Huaqing Pool, Mount Hua, Qianling Mausoleum, etc.