The modern history of China can be said to be an extremely rich and complicated historical period. During this period, China experienced numerous turbulence and setbacks, and also experienced the transformation from a feudal society to a semi-colonial and semi-feudal society. For the people of China, this period of history is extremely difficult and full of opportunities and hopes.

To evaluate the modern history of China, we need to analyze it from many aspects:

1. Achievements and progress. During this period, China experienced many revolutions and constantly explored the construction of social and political systems. Although it has gone through a tortuous road, it has also produced many important achievements and progress, such as the rise of the new cultural movement and the progress of science and technology and culture.

2. Turbulence and frustration. At the same time, during this period, China also experienced many turbulence and setbacks, such as Eight-Nation Alliance's war of aggression against China, War of Resistance against Japanese Aggression, the Cultural Revolution and so on. The injuries and losses caused by these incidents have had a far-reaching impact on the people of China.

3. Impact on the future. The modern history of China has a profound influence on contemporary China. No matter in ideology, culture or political economy, the modern history of China has brought many thoughts and inspirations to today's China. At the same time, the experience of modern history is also an important foundation for China's reform and development.

To sum up, the evaluation of China's modern history is a complicated process, and it is necessary to deeply analyze its historical process and significance, so as to better understand this history and provide beneficial enlightenment and reference for future development.