Reasons for the rise of clan concept and its positive and negative effects.

This is mainly a clan trend that developed after the Han Dynasty.

Confucianism gradually prevailed in the Han Dynasty and became the foundation of the country, and then entered a long period of division such as the Three Kingdoms and the Jin Dynasty. Cultural traditions were severely damaged, but the Han Dynasty was strong, and some families accumulated a certain number, becoming famous in their counties and counties and becoming local aristocrats. This is already obvious in the Three Kingdoms, such as Yuan Shikai's Yuan Shao, Kong Shi's Kong Rong and so on. During the war, these big families preserved more cultural heritage and became new and stable gentry.

Later, the Jin Dynasty split into two parts, and the Jin Dynasty in the south of the Yangtze River stood firm by the relationship between Wang Dao and Wang Dun and the southern literati. Since then, this regime has been more serious to the gentry, which has led to the influence of powerful families on state affairs, and the concept of family status has begun to prevail, which is also the fundamental source of genealogical inquiry in later generations. The so-called top-grade no cold door is the situation at this time.

The specific reasons and effects will not be described one by one. Please refer to Peking University Professor Yan Buke's description of ancient political bureaucrats in China. Especially the introduction of Wei, Jin, Southern and Northern Dynasties,