Inorganic chemistry: Inorganic chemistry is a subject that studies inorganic compounds and an important branch of chemistry. Generally, inorganic compounds refer to compounds without CH bond, which are opposite to organic compounds, so carbon monoxide, carbon dioxide, carbon disulfide, cyanide, thiocyanate, carbonic acid and carbonate all belong to the category of inorganic chemistry research. Organic chemistry: Organic chemistry, also known as carbon compound chemistry, is a science that studies the composition, structure, properties, preparation methods and applications of organic compounds, and is an extremely important branch of chemistry. Advanced inorganic structural chemistry: The content of advanced inorganic structural chemistry is divided into three parts: theoretical basis of chemical bond, symmetry in chemistry, selection theory of element structural chemistry and supramolecular structural chemistry. Structure and physical properties: Structure and physical properties introduce the basic structure of matter and its influence on macroscopic physical properties from the levels of atom, molecule, cluster and crystal respectively. The physical essence of chemical bond and its influence on the structure, morphology and properties of matter are emphatically introduced. Analytical chemistry: Analytical chemistry is a science that studies the analytical methods and theories of chemical information such as composition, content, structure and morphology of substances, and is an important branch of chemistry.