Like me, I'm from Henan, and I'm usually in the top of my class 15.
Relax during the exam, and you will be admitted easily.
Xiamen University is indeed a very beautiful school. I have been to Peking University and Tsinghua. From the point of view of beauty, they are not at the same level as Xiamen University, which is known as Ocean Garden University.
Don't think about the result, just work hard!
Good luck getting into Xiamen University. Come on!