Books from China's three cultural sources include

The Classic of Mountains and Seas, the Yellow Emperor's Classic of Internal Medicine, and the I Ching.

1. The Classic of Mountains and Seas. The Classic of Mountains and Seas is of extraordinary value to China in the study of ancient customs, geography and culture, myths and legends, and so on.

2. The Yellow Emperor's Classic of Internal Medicine. The Yellow Emperor's Classic of Internal Medicine is China's earliest medical text, one of the four classic works of traditional medicine.

3, "I Ching". The I Ching is the first Chinese classic, the first and the beginning of the group of classics.