Brothers who played a pivotal historical role in establishing mature Neo-Confucianism. Of the two, Cheng Hao was the more mystical and introspective; Cheng Yi emphasized extending knowledge of the world through investigation.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。