1, Zhengzhou University has taken the private international law as a self-taught undergraduate law major. In the case of differences between civil law and commercial law in the world, which country's law should be applied to solve the relationship between civil law and commercial law with foreign factors.

2. The Outline of Modern History of China is divided into three parts in chronological order: from the Opium War to the eve of the May 4th Movement, from the May 4th Movement to the founding of New China, from the founding of New China to the new period of socialist modernization.