1, academic reputation, Tsinghua University has a world-leading academic reputation in the fields of engineering, computer science and physics, and Karolinska University has also made good academic achievements in the fields of medicine, biology and chemistry. Therefore, Tsinghua is better.

2. Internationalization: Tsinghua University has rich resources and experience in international exchanges and cooperation, and Karolinska University has also made great progress in internationalization. So Tsinghua is better.