What are the challenges and threats to China's national security?

National security is divided into traditional national security and non-traditional national security. Traditional national security refers to military security and political security. Non-traditional national security involves a wide range of fields, including economic security, information security, food security, financial security, and three evil forces, pirates, non-governmental organizations and other issues. Your question is difficult to explain clearly as a paper. There are a lot of research materials on national security in the traditional field, and the research is also relatively in-depth. Recommend a book about non-traditional security in non-traditional fields, published by current affairs publishing house, in red paper, which is very detailed and should help you have an overall understanding.