What is the possible reason that some foods promote the brain performance?

Why certain food choices might help the brain function better remains unclear. Perhaps these regimens’ known cardiovascular benefits, which promote a good flow of blood and oxygen to the brain, are key. But other factors may be at work. Of course, questions about when these dietary changes need to happen or how diet stacks up against other factors, such as physical activity, sleep patterns and genetics also remain unanswered.

The intellectual climate of the last decades of the Qing dynasty was characterized by a profound self-doubt and culture of criticism. A growing part of the Chinese intellectuals questioned the value of Confucianism, the ideology that had dominated Chinese political life for the largest part of its imperial history. Chinese intellectuals’ identification with Chinese cultural values rather than a national identity gradually shifted as they came to support creating a Western style Chinese nation-state.