1. Neuroscience:

A branch of biology is also recognized as one of the top ten most difficult subjects in the world. Not many universities in China offer this major, but they are all powerful universities. Neuroscience is an interdisciplinary subject. Learning this science requires a deep understanding of other fields.

Neuroscience also tries to understand the biological basis that supports people's emotional life, how emotions change people's thoughts, and why there are symptoms such as depression, mania, schizophrenia and Alzheimer's disease when the adjustment of emotions, thoughts and actions is distorted. These are extremely complicated problems, which are more complicated than any problems that people have ever faced in other biological fields.

Neurology includes brain science, neurobiology, neuropathology, behavioral genetics and other fields. In the field of neuroscience, the first research is system theory and computer science, such as cybernetics and artificial intelligence.

2. Mathematics:

This is arguably the most difficult subject in the world. I believe everyone will have time to rack their brains for the advanced mathematics in the university. In addition, when we talk about mathematics here, we don't mean high school mathematics or advanced mathematics. It is a collection of all mathematics.

Mathematics is often abbreviated as Math or maths], which is a subject that studies concepts such as quantity, structure, change, space and information.