On the whole, the strength and ranking of the three schools are at the same level. If you must compete with each other, it has a lot to do with where you are now and where you will develop in the future. If you are in Jiangsu, Zhejiang and Shanghai, Dongda is the first choice. Basically, you can go to Xiamen University as long as you pass the college entrance examination in Jiangsu Province. People here agree with the famous schools in this province (such as Dongda and Nanda). Apart from Jiangsu, Zhejiang and Shanghai, Xiamen University was chosen in the south and Beihang University was chosen in the north.

In addition, the major is something you have to consider. If you are a liberal arts student, or you are going to study law, literature, history and philosophy, you should choose Xiamen University regardless of regional issues. And if you are a science student and are going to study engineering, Xiamen University can directly rule out and choose the other two. Because Beihang University, Dongda University and other strong universities of science and engineering, the liberal arts major is the foil, and the school brand is useless to you, and vice versa.

The above is an experienced person's suggestion, word for word, I hope to adopt it and be admitted to an ideal university.