How did the classic metaphysics of Confucianism develop?

During the Wei, Jin, Southern and Northern Dynasties, the classics were greatly influenced by the long-term war. After the Yongjia Rebellion in the Western Jin Dynasty, almost all the modern classics handed down by Dr. Five Classics in the Western Han Dynasty were scattered, and only the ancient classics that flourished in the Eastern Han Dynasty were handed down. Three Rites written by Shi Mao and Zheng, and Zuo Zhuan written by Du Fu are all ancient classics. In the field of Confucian classics, due to the influence of long-term social unrest, scholars and local doctors have become pessimistic and world-weary They combined the nihilistic thoughts of Laozi, Zhuangzi and Taoism with the Confucianism of Confucius and Mencius, advocated the rule of inaction, flaunted the nihilistic "talk clearly", and appeared the so-called "noble nothingness" metaphysics. Cao Wei's remarks and works on Morality annotate The Analects of Confucius, and Wang Bi's annotations on Laozi and Yijing are all representatives advocating this nihilistic thought. The metaphysics of Confucian classics in Wei, Jin, Southern and Northern Dynasties was an important trend of Confucian classics development at that time.